Ques:- A milk vendor has 2 cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each of the containers so as to get 12 litres of milk such that the ratio of water to milk is 3 : 5?
A. 4 litres, 8 litres
B. 5 litres, 7 litres
C. 6 litres, 6 litres
D. 7 litres, 5 litres
Recent Answer : Added by Abdul On 2022-05-17 08:56:53:
Ans- 6,6 litres
Let x Litres from can1 (where, water = x/4 litres and milk = 3x/4 litres)
Now
12-x liters from can 2 ( where, water = 6-x/2, milk = 6-x/2)
Now given
water/milk = 3/5
0.25x+6-0.5x / 0.75 +6-0.5x = 3/5
6-0.25x/6+0.25 = 3/5
Solve it you get
x = 6 litres from can1
Then 12-x= 12-6=6 litres from can2
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Ques:- if 4 circles of equal radius are drawn with vertices of a square as the centre , the side of the square being 7 cm, find the area of the circles outside the square?
Recent Answer : Added by Uday On 2022-03-11 17:00:31:
190.85
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.
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Ques:- Find out the wrong number in each sequence:
22, 33, 69, 99, 121, 279, 594
A. 594
B. 279
C. 121
D. 33
Recent Answer : Added by Admin On 2022-09-28 18:38:17:
B. 279
Ques:- If the L.C.M of two numbers is 750 and their product is 18750, find the H.C.F of the numbers.
Ques:- The present ages of three persons are in proportions 4:7:9. Eight years ago, the sum of their ages was 56. Find their present ages.
Recent Answer : Added by PRAthAM On 2022-08-14 16:34:21:
16, 28, 36
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Ques:- Here is an interesting sequence.. 1 20 33 400 505 660 777 8000 9009 10100 11121 What are the next few numbers in the above sequence?
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Ques:- 3, 5, 8, 13, 24, 39, 72 FIND THE WRONG NUMBER
Recent Answer : Added by Admin On 2020-05-17 12:04:10:
3*2-1=5
5*2-2=8
8*2-3=13
13*2-4=22
22*2-5=39
39*2-6=72
so series is 3,5,8,13,22,39,72
24 should be replaced by 22
24 is wrong…….
Ques:- A school is going to have 1000 students in near future. 1/4th use scooter, 1/5th use bikes and 1/9th use cycle. Find the number of students at present.
Recent Answer : Added by Pijus Ghosh On 2021-12-17 16:08:32:
562.
Ques:- A man spends half of his salary on household expenses, 1/4th for rent, 1/5th for travel expenses, the man deposits the rest in a bank. If his monthly deposits in the bank amount 50, what is his monthly salary ?(a) Rs.500(b) Rs.1500(c) Rs.1000(d) Rs. 900
Recent Answer : Added by DK BOSS On 2021-07-17 06:22:58:
option c is the answer
as
1/2 for household
1/4 for rent
1/5 for travel
remaining for deposit in bank(i.e) 1/2+1/4+1/5=19/20 ; 1-19/20=1/20
so 1/20 for deposit
1/20(x)=50
hence x=1000
option c is the answer
Ques:- A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is?
Recent Answer : Added by Shitoshe Wangatia On 2021-12-11 15:07:20:
854=P(1+4r)
P+4r=854
Solve the sums using Elimination method.
P+4r=854
P+3r=815
r=39.
Toget Principal
P+4r=854
P+4*39=854
P=854-117
P=698
Ques:- The sum of the two digits of a number is 10. If the number is subtracted from the number obtained by reversing its digits, the result is 54. Find the number?
Recent Answer : Added by Ponranjithkumar J On 2022-05-17 09:08:41:
answer is 28
>2+8=10
>reverse of 28 is 82
>subtract 28 from 82
>82-28=54
the number is 28
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Recent Answer : Added by yo On 2022-12-20 12:54:21:
find out what is the problem and taking the bad out always works.
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Ques:- X, Y and Z enter into partnership. X invests some money at the beginning, Y invests double the amount after 6 months, and Z invests thrice the amount after 8 months. If the annual gain be Rs.18000. X’s share is?
Recent Answer : Added by Mohammad Ahli-Gharamaleki On 2022-08-14 16:39:23:
600
Ques:- A power unit is there by the bank of the river of 750 mtrs wide. A cable is made from power unit to power plant opposite to tht of the river and 1500 mtrs away from the power unit. the cost of cable above water and below water is Rs12 and Rs 15. Find the total cost for cable laying ?
Recent Answer : Added by Admin On 2020-05-17 12:04:06:
if rs 12 and rs 15 per meter then 750*12+750*15
Ques:- How will you balance your work life and personal life ?
Ans- 6,6 litres
Let x Litres from can1 (where, water = x/4 litres and milk = 3x/4 litres)
Now
12-x liters from can 2 ( where, water = 6-x/2, milk = 6-x/2)
Now given
water/milk = 3/5
0.25x+6-0.5x / 0.75 +6-0.5x = 3/5
6-0.25x/6+0.25 = 3/5
Solve it you get
x = 6 litres from can1
Then 12-x= 12-6=6 litres from can2