Ques:- Radius of sphere is increased by 50%. By how much percentage is surface area is increased?
Recent Answer : Added by Admin On 2020-05-17 11:59:36:
let original radius=100
original surface area lets say it x =4 * (22/7) * 100 *100
new radius=100 + 50% of 100=150
new surface area lets say it y = 4 * (22/7)* 150* 150
increase in surface area=((y-x)/x) * 100
i.e.
((4*(22/7)*150*150 – 4*(22/7)*100 *100) / (4*(22/7)*100*100))*100
=125
so the answer is 125%.
hope this helps you.
Ques:- If I walk with 30 miles/hr i reach 1 hour before and if i walk with 20 miles/hr i reach 1 hour late. Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which it walks.
Ques:- And why do you think you are ambitious?
Ques:- The sum of three consecutive integers is 102. Find the lowest of the three?
Recent Answer : Added by Nicolae On 2021-09-22 16:55:53:
33
Ques:- What was ur first job
Ques:- If BOMBAY is written as MYMYMY, how will TAMIL NADU be written in that code ?
Ques:- Here are eight words: work, hog, age, less, nut, sheet, Man, water. All but one of them have something in common. What is it and which is the odd word out?
Recent Answer : Added by Prativa On 2021-12-09 18:39:30:
Hog
Ques:- Before where did you worked?
Ques:- The ?Hypothetical Problem?
Ques:- Which shift you wanna work for ?
Ques:- Tell me something about myself?
Ques:- The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
Recent Answer : Added by Khaled Mohamed On 2022-09-15 16:35:59:
Assuming the youngest has X years, so we have
X+(X+3)+(X+6)+(X+9)+(X+12)=50
5X+30=50
5X=20
X=4
The youngest has 4 years
Ques:- In a certain company, 20% of the men and 40% of the women attended the annual company picnic. If 35% of all the employees are man, what percent of all the employees went to the picnic?
Recent Answer : Added by Admin On 2020-05-17 12:00:16:
Answer is 33%
{35 % of all the employees are men.
so 65 % (100-35) of all the employees are women.
35*20%=7% of the men attended the annual company picnic and
65*40%=26% of the women attended the annual company picnic.
so 33%(7+26) of all the employeeswent to the picnic.}
Ques:- Why you interested for this job?
Ques:- A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is?
Recent Answer : Added by sivakumar On 2022-05-17 09:08:05:
upstream = 25km/hr
downstream=35km/hr
so…if the speed of current would be 5km/hr and boat speed = 30km/hr
so that it will be change towards upstream and downstram…
Ques:- Did u use check points during ur work experience ?
Ques:- A company bought a total of 60 computers and 20 printers to modernise billing operations. If the price of each computer was three times the price of each printer, what percent of the total cost of the purchase was the total cost of the printer?
A. 10%
B. 11%
C. 15%
D. 20%
Recent Answer : Added by whocares On 2022-08-14 16:32:07:
Ans is 10%
Printer price = x;
Computer price = 3x
Total overall price = 20x + 60 x 3x = 200x
Printer percent = (20x/200x ) x 100 = 10%
Ques:- One train is traveling 45 kmph and other is at 10 meters a second. What is the ratio of the speed of the two trains ?
Ques:- A number exceeds by 25 from its 3/8 part. Then What is the number ?
Recent Answer : Added by Keshav Kumar On 2021-08-15 14:42:41:
40
Ques:- January 7, 1992 was Tuesday. Find the day of the week on the same date after 5 years, i.e., on January 7, 1997?
A. Monday
B. Tuesday
C. Wednesday
D. Friday
E. Friday
Recent Answer : Added by S.kowsalya On 2022-05-17 09:08:19:
Tuesday
Ques:- If MADRAS can be written as ARSARS, how can ARKONAM be written in that code ?
Ques:- Argentina had football team of 22 player of which captain is from Brazilian team and goalki from European team. For remainig palayer they have picked 6 from argentinan and 14 from european. Now for a team of 11 they must have goalki and captain so out of 9 now they plan to select 3 from rgentinian and 6 from European. Find out no. of methods avilable for it.
Recent Answer : Added by Admin On 2020-05-17 12:02:19:
160600
Ques:- There is a safe with a 5 digit no. The 4th digit is 4 greater than the second digit, while 3rd digit is 3 less than 2nd digit. The 1st digit is thrice the last digit. There are 3 pairs whose sum is 11. Find the number.
Recent Answer : Added by Raimol Kurian On 2021-05-11 11:37:33:
65292
Ques:- if the area of sqare increases by 69% then side of the sqr incr by
Recent Answer : Added by Admin On 2020-05-17 11:59:49:
30%
Ques:- In each questions below are given two statements followed by two conclusions numbered I and II. Statements : Most teachers are boys. Some boys are students. Conclusions :
I. Some students are boys. II. Some teachers are students.
A. if only conclusion I follows
B. if only conclusion II follows
C. if either conclusion I or II follows
D. if neither conclusion I nor II follows
E. if both conclusions I and II follow
Ques:- The numbers 1, 2, 3, 4, 5, 6, 7, 8, and 9 must be put in the depicted triangle, in such a way that the sums of the numbers on each side are equal. How should the numbers be arranged in the triangle?
Recent Answer : Added by Sandeep tomar On 2021-08-25 14:15:29:
Average = (1+2+3+4+5+6+7+8+9)/3
= 45/3 = 15
Every side will contain sum of 15.
1st side contains 8 and 7.
2nd side contains 9 and 6.
3rd side contains 1,2,3,4 and 5.
Ques:- How would you spend a million pounds ?
Ques:- Ajay and Vijay have some marbles with them. Ajay told Vijay “if you give me ‘x’ marbles, both of us will have equal number of marbles”. Vijay then told Ajay “if you give me twice as many marbles, I will have 30 more marbles than you would”. Find ‘x’?
Recent Answer : Added by Kristi Bardhan On 2022-09-02 17:04:00:
If Vijay gives ‘x’ marbles to Ajay then Vijay and Ajay would have V – x and A + x marbles.
V – x = A + x — (1)
If Ajay gives 2x marbles to Vijay then Ajay and Vijay would have A – 2x and V + 2x marbles.
V + 2x – (A – 2x) = 30 => V – A + 4x = 30 — (2)
From (1) we have V – A = 2x
Substituting V – A = 2x in (2)
6x = 30 => x = 5.
Ques:- Analyse the first Law of Thermodynamics?
Ques:- Nitin borrowed some money at the rate of 6% p.a. for the first three years, 9% p.a. for the next five years and 13% p.a. for the period beyond eight years. If the total interest paid by him at the end of eleven years is Rs. 8160, how much money did he borrow?
Recent Answer : Added by Dharmendra Kumar On 2021-12-09 18:39:47:
let original radius=100
original surface area lets say it x =4 * (22/7) * 100 *100
new radius=100 + 50% of 100=150
new surface area lets say it y = 4 * (22/7)* 150* 150
increase in surface area=((y-x)/x) * 100
i.e.
((4*(22/7)*150*150 – 4*(22/7)*100 *100) / (4*(22/7)*100*100))*100
=125
so the answer is 125%.
hope this helps you.