The following bar graph shows the number of girls in a school over 5 years.

Find the percentage decrease in the number of girls from the year 2012 to the year 2013.

42 boys can complete a piece of work in 20 days working 8 hours per day. In how many days can 14 boys complete the same work, each boy working 12 hours per day?

In a bag there are coins of ₹2, ₹5 and ₹10 denominations. The total number of coins in the bag is 300. If the number of coins of ₹2, ₹5 and ₹10 denominations are in the ratio of 1:2:3, then what is the total amount of money in the bag?

If 30% of a = b, then b% of 50 is the same as:

The marked price of an item was ₹5,000. While selling the item, the seller offered successive discounts of 15% and 5%. What was the final selling price of the item?

A rectangular LCD has an area of 480 $${{cm^2}}$$ and a perimeter of 92 $${{cm^2}}$$ . If the size of the LCD is defined of the diagonal, then what the size of the LCD?

Simplify the following expression.
12 + 2.5 + (1.5 of 4) - 2.6

If $$A={{2^7×3^7}}$$, $$B={{2^7×3^5}}$$ and $$C={{2^8×3^4}}$$, then what is the least common multiple of A, B and C?