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The quantity of water in litres, that must be added to 12 litres of beer priced at Rs.10 a litre to reduce the price to Rs.8 a litre, is

The quantity of water in litres, that must be added to 12 litres of beer priced at Rs.10 a litre to reduce the price to Rs.8 a litre, is
a. 3 - Ans
b. 1
c. 2
d. 3.5
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It takes 10 days for digging a trench of 100 m long, 50 m broad and 10 m deep. What length of trench, 25 m broad and 15 m deep can be dug in 30 days ?

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