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This page contains the most recently asked technical questions and answers in the Qapital.
All of the questions listed below were collected by students recently placed at Qapital.
36, 64, 81, 125, 169
Three families
If n = no. of revolutions for back wheel
9n = 7n + 10*7
n=315
Lets call the 5 litre jug as jug A and 3 litre jug as jug B. Now, follow the steps:
Fill jug A completely. Now it contains 5 litres.
Slowly pour the water from jug A to jug B until jug B is completely filled. Now, jug A contains 2 litres and jug B contains 3 litres.
Throw away the water in jug B so that it is completely empty. Now, jug A contains 2 litres and jug B is empty.
Transfer the water from jug A to jug B. Now, jug A is empty and jug B contains 2 litres.
Fill jug A completely. Now, jug A contains 5 litres and jug B contains 2 litres.
Transfer water from jug A to jug B until jug B is completely filled. Now, jug A contains 4 litres and jug B contains 3 litres.
Now you have 4 litres of water in jug A.
Previous their age was 21 and 18 respectively
Presently, after 6 years the age is 27 and 24.
1.7% loss
1000 cu.m
125