The length of a rectangle is four times it’s width. of the width is 15, what is the area?

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.