How do I find 15 increased by 60%

An example that illustrates speed

A box of pens contains 24 red pens and four black pens what percentage of the pens are red

There were 72 runners to start a race. in the first half of the race, 13 of them dropped out. in the second half of the race, 23 of the remaining runners dropped out. how many runners finished the race?

Your meal at Applebee's cost $17.81 if you leave a 20% tip what is the total cost that you pay?

you ear $10 for each hour you work for a canoe rental shop. Write an expression for your salary for working h hours.

Units of density are grams/cubic centimeter or g/cm3. a. True b. False

If a/b = 6/7 and a / c = 2/5, what is the value of 3b+c in terms of a?

How can 4.17 be written as a whole number with a fraction?

Improper fraction of - 3 3/11

What is the f of x over the g of x when f (x) = - 2x^3 + x^2 + 16x - 15 and g (x) = x + 3?