40 is 75% of what?
3 is 8.5% of what?
5 is what percent of 95?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Find the rate at which the water is now flowing from the tap give your answer cubic centimetres per second

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earn $75 in interest.how much interest will she earn during the following year?