Brick : Clay :: Ruby : ?
The least perfect square that is divisible by 21, 36, and 66 is:
10 motors can pump 20 litres in 6 hours. In how many hours can 15 motors pump 40 litres?
In what time will a railway train 60 m long moving at the rate of 36 km/h pass a telegraph post on its way?
A finishes a piece of work in 10 days, and B finishes the same work in 15 days. If B joins 5 days after A starts, find the remaining time.
Ashwin spends 65% of his income. His income is increased by 20% and he increased his expenditure by 10%. Find the percentage increase in his savings.
In a 216-metre long yard, 25 trees are planted at equal distances, with one tree at each end of the yard. What is the distance between two consecutive trees?
Line 'k' lies in the xy-plane. The x-intercept of line 'k' is -4, and line 'k' passes through the midpoint of the line segment whose endpoints are (2,9) and (2,0). What is the slope of line 'k'?
Statements: All the locks are keys. All the keys are bats. Some watches are bats.
Conclusions:
The simple interest on a certain sum is 16/25 of the sum. Find the rate percent and time, if both are numerically equal.