16 men can complete a piece of work in 7 days. In how many days will 28 men complete the same work?

A watch is sold on 20% discount and there is 15% extra discount on cash payment. If Selena purchased it in Rs. 2380 cash payment, then what was the marked price of the watch?

Sita deposited Rs . 5,000 at 10 % simple interest for 2 years. How much more money will Sita have in her account at the end of two years. If it is compounded semiannually. 

The price of 6 pencils is Rs. 30 and that of 12 pens is Rs. 120. What is the average price of 50 pencils and 50 pens?

3400 Rupees is divided among A, B, C, D in such a way that the share of A and B, B and C, C and D may be as 2:3, 4:3 and 2:3 respectively. The sum of shares of B and D is:

What will come in place of question mark(?) in the following number series?
10, 14, 25, 55, 140 (?)

Direction: 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 total unsold books of store A. 

One number is 50% less than X and another number is 20 percent less than X. What is the ratio of both the numbers?