2 2 9 9 7 6

# PERCENTAGE & RATIO PROPORTION SET5

Q.1 Milk vendor has 2 cans of milk. First contains 25% water & rest milk. Second contains 50% water. How much milk should he mix from each of the container so as to get 12 litres of milk such that ratio is 3:5 ?
A) 4 litres
B) 5 litres
C) 6 litres
D) 7 litres
Ans. C
Let the cost of 1 litre milk be Re. 1
Milk in 1 litre mix. in 1st can = 3 litre, C.P. of 1 litre mix. in 1st can Re. 3
4 4
Milk in 1 litre mix. in 2nd can = 1 litre, C.P. of 1 litre mix. in 2nd can Re. 1
2 2
Milk in 1 litre of final mix. = 5 litre, Mean price = Re. 5
8 8
By the rule of alligation, we have:

C.P. of 1 litre mixture in 1st can   C.P. of 1 litre mixture in 2nd can

3
4
Mean Price
5
8
1
2

1
8
1
8

Ratio of two mixtures = 1 : 1 = 1 : 1.
8 8
So, quantity of mixture taken from each can = 1 x 12 = 6 litres.
2
Q.2 We have 100 litres of Vodka & take 10 litre & add 10 litre of water. Then after 3 processes what is the quantity of Vodka ?
A) 27 litre
B) 28 litre
C) 29 litre
D) 30 litre
Ans. A
Original quantity is 100 & if we take 10 litre then 90% is left i.e. 0.9
Then, V=100*(0.9)3
Or V=72.9
Or water=100-72.9
=27.1 litre

Q.3 Tea worth Rs.126/kg & Rs.135/kg are mixed with third variety in ratio 1:1:2.If mixture is worth Rs.153/kg by the price of third variety/kg will be :
A) 175.5
B) 180.2
C) 175.1
D) 180.6
Ans. A
126      135      x
1kg      1kg      2kg

153
Or 126+135+2x=4*153
Or 261+2x=612
2x=351
X=175.5

Q.4 Discount on Rs. 2562 due 4 months hence is Rs.122. Rate % is ?
A) 2%
B) 3%
C) 4%
D)5%
Ans. D
2562-122=2440
122*100  /2440=5%

Q.5 729 ml of mixture contains milk & water in the ratio of 7:2. How much water is to be added to get a new mixture containing milk & water in the ratio of 7:3 ?
A) 80 ml
B) 81 ml
C) 82 ml
D) 83 ml
Ans. B
Milk=729*7/9 = 567 ml
Water=729-567=162 ml
Or 567/162+x=7/3
Or 1701=134+7x
X=81 ml

Lorenza
2024-06-28

Hello! Do you know if they make any plugins to assist with Search Engine Optimization? I'm
trying to get my blog to rank for some targeted keywords but I'm
not seeing very good success. If you know of any please share.

Thank you! You can read similar blog here: Escape room