RRB Assistant Loco Pilot and Technician Model Paper 7 with solutions

Question : 3 of 100

Marks: +1, -0

In a mixture of milk and water the proportion of water by weight was 75% if in the 60 gms mixture 15 gms water was added, what would be the percentage of water in the new mixture?

75%
80%
90%
100%

Validate

Solution:

(b) In 60 gm. of mixture,
Quantity of water = 60 x

75/100

= 45 gm
Quantity of milk = 15 gm
After mixing 15 gm of more water, Quantityof water in new mixture
= 45 + 15 = 60 gm
∴ Quantity of water in 75 gm of mixture= 60 gm
∴ 100 gm of mixture will contain
=

60/75

x 100 = 80% of water

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