If the 8-digit number 888x53y4 is divisible by 72, then what is the value of (7x + 2y) for the maximum value of y?

10 men working 6 hours a day can complete a work in 18 days. How many hours a day must 15 men work to complete the same work in 12 days?

A certain number of men can do a work in 60 days. If there were eight more men, it could be completed in 10 days less. How many men were there in the beginning?

Directions: Read the pie chart carefully and answer the following questions.

Note: No new employees joined the given banks of left the given banks from January 2015 to December 2015.

In January 2015, 32% of the total number of scale I officers in Banks B, D, and E together were unmarried. If the respective ratio between the number of unmarried officers in these banks was 3 : 2 : 3, what was the number of unmarried Scale I officers in Bank D?

A sum of money amounts to 5,200 in 5 years and to 5,680 in 7 years at simple interest. The rate of interest per annum is-

In the following diagram, three different products (in thousands) produced by a company in 5 years are given and after studying them carefully, answer the following questions.

Three products produced by a company in different years (in thousands)

What will be the average of the Key board produced in the year 2006 and year 2008?

Directions: Given bar graph shows the number of plain books and lined books (in hundreds) available at three different stores and the table shows the percentage of total books (Plain + lined) that was sold by different stores.

The average of total books sold by stores B and C together is how much more than the total unsold books of store A. 

The value of $$5-{8+2\sqrt{15} \over4}-{{1}\over8+2\sqrt{15}}$$ is equal to: