Quantitative Aptitude - Arithmetic Ability Questions

Manish can complete a work in 21 days and Karan can complete the same work in 28 days. If both together work for 7 days, then what fraction of total work is left?

Amit can complete a work in 25 days and Punit can complete the same work in 20 days. Punit alone worked at it for 10 days and then left the work. In how many days will Amit alone complete the remaining work?

In a class of 60 students there are 30 girls. The average weight of these girls is 58 Kg and average weight of the full class is 63 kgs. What is the average weight of the boys of the class?

What smallest number should be added to 2401 so that the sum is completely divisible by 14 ?

Two numbers are more than the third number by 16.25% and 55% respectively. First number is what percentage of the second number?

If x and y are natural numbers such that x + y = 2017, then what is the value of (– 1)x+ (– 1)y?

If 5x = 30-y = 6z, then what is the value of (xy + yz + zx)/xyz?

What is the measure of an interior angle of a regular decagon?