Newborn twins fall asleep at 8:00 P. M. The first twin wakes up every 60 minutes, then goes back to sleep. The second twin wakes up every 80 minutes. How long after 8:00 P. M. do both twins wake up at the same time?

Ken has 8 toy trains Ron has 3 toy trains how many fewer toy trains does Ron have than ken?

If a=6, b=-2 what is (ab) squared

How to make a table for y=4

How did circe change form the first

An aquarium wants to install a new fish tank with a parabolic glass dome fitted at its bottom to allow visitors to look at the marine life from below. The glass dome will be 60 feet in diameter and will have a depth of 4 feet.

A certain star is 1.135 * 10^14 km away from Earth. If light travels at 9.4607 * 10^12 km per year, how long will it take for light from the star to reach Earth?

What number exceeds 75 by 19

How do you find the ratio of integers

Where would you place the tic mark for the fraction 3/3 explain

Jenny has 23 bags of sweets. In each bag there are 6 sweets. If she shares them equally amongst her 7 friends how many apples do they each have?