Ques:- Two cars cover the same distance at the speed of 60 and 64 kmps respectively. Find the distance traveled by them if the slower car takes 1 hour more than the faster car.
Ques:- If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is -.
Recent Answer : Added by Jim On 2022-09-15 16:37:22:
Spade 13/52 = 1/4
King 4/52 = 1/13
Spade OR King 13/52 + 4/52 – 1/52 (because the King of Spades is in both groups) = 16/52 = 4/13
Ques:- Can you give the demos to students and teacher?
Ques:- The time taken by a train 180 m long, travelling at 42 kmph, in pasing a person walking in the same direction at 6 kmph, will be
A. 16 sec
B. 18 sec
C. 21 sec
D. 24 sec
Recent Answer : Added by SHOWMINI R On 2022-08-14 16:29:07:
D = 180m
S = 42 – 6 = 36 * 5/18 = 10
T = D/S = 180/10
T = 18s
Ques:- A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
Ques:- If MADRAS can be written as ARSARS, how can ARKONAM be written in that code ?
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Ques:- To 15 lts of water containing 20% alcohol, we add 5 lts of pure water. What is % alcohol.
Recent Answer : Added by Shashank Panddey On 2022-09-15 16:36:25:
saying 20%alcohol in 15 litre solution.
It means (20/100)*15=3 litres
Now 5 litre of water is added not alcohol.
So it means only the volume of solution is increases by 5 not alcohol.
It means 15+5=20
Now % of alcohol is
(3/20)*100=15%.
Ques:- What is aim?
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Ques:- All natural numbers and 0 are called the _____ numbers.
A. whole
B. rational
C. integer
D. prime
Recent Answer : Added by narendra On 2022-09-18 09:03:01:
A
Ques:- In what ways do you use math in your daily life?
Ques:- In a row of girls, Shilpa is eight from the left and Reena is seventeenth from the right. If they interchange their positions, Shilpa becomes fourteenth from the left. How many girls are there in the row ?
Recent Answer : Added by Vivek Bharadwaj On 2022-08-14 16:33:35:
Ques:- A car started running at a speed of 30 km/hr and the speed of the car was increased by 2 km/hr at the end of every hour. Find the total distance covered by the car in the first 10 hours of the journey.
Recent Answer : Added by Admin On 2022-09-29 18:44:47:
30+32+34+36+38+40+42+44+46+48=390..
Ques:- A moves 3 kms east from his starting point . He then travels 5 kms north. From that point he moves 8 kms to the east. How far is A from his starting point?
Recent Answer : Added by usha On 2021-11-09 15:54:01:
16
Ques:- A person gives a book for binding, but the binder cuts the book in such a way that he cutsaway the numbers on the pages. So now the person sits down to write the page numbers.What he observes is that the book had 61 times 3¶s. How many pages does the book contain?
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Ques:- A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?
Recent Answer : Added by isha On 2020-11-08 02:14:20:
20
speed of downstream=speed at still water+flow
= 15+5=20
Ques:- The average runs scored by a batsman in 20 matches is 40. In the next 10 matches the batsman scored an average of 13 runs. Find his average in all the 30 matches?
Recent Answer : Added by Sonali On 2020-11-17 15:27:47:
31
Ques:- Projects done in college, my extracurricular activities.
Ques:- During a given week A programer spends 1/4 of his time preparing flow chart, 3/8 of his time coding and the rest of the time in debugging the programs. If he works 48 hours during the week , how many hours did he spend debugging the program.
Recent Answer : Added by Admin On 2020-05-17 12:01:34:
Here is the ans with explanation…..
Just divide 48 hours into 8 parts…
for flowchart its 1/4 so it is 2/8 = 12hours
For Coding it is 3/8 = 18 hours
the rest is again 3/8 = 18 hours for debugging..
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Ques:- Raj has a jewel chest containing Rings, Pins and Ear-rings. The chest contains 26 pieces. Raj has 2 and 1/2 times as many rings as pins, and the number of pairs of earrings is 4 less than the number of rings. How many earrings does Raj have?…
Recent Answer : Added by King11 On 2022-03-18 09:20:21:
6 pairs of earrings. So 12 earrings.
The total has to be 26, so let’s say there’s 6 pairs of earrings and the number of pairs has to be 4 less than the number of rings. So that would make 10 rings. The 10 rings has to be 2 1/2 greater than the number of pins. So you would divide 10/2.5 = 4 Pins. That would equate to a total of 12 earrings, 10 rings, and 4 pins. A total of 26 pieces.
Spade 13/52 = 1/4
King 4/52 = 1/13
Spade OR King 13/52 + 4/52 – 1/52 (because the King of Spades is in both groups) = 16/52 = 4/13