Mrs. cha has $90 dollars. she spends 1/3 of the money on monday. she spends the remaining money equally over the next 3 days. how much money does she spends on each of the 3 days?

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

What is the lcm of 16 and 40 ? 24 and 40 ?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?