frank has two fish tanks his new tank contains 20 liters of water and is being filled at a rate of 5 liters per minute his old tank contains 75 liters and is being drained at a rate of 3 liter per minute how many minutes until both tanks have the same amount of water

For a read-a-thon, jay and odhràn each started reading a book at the same time and continued reading for several hours. jay's book had 278 pages, and he read 55 pages per hour. odhràn's book had 238 pages, and he read 45 pages per hour. after how many hours did they have the same number of pages left, and how many pages were left?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

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