The volume of each small box is 6 cubic feet and large box 22 cubic feet total of all boxes was 320 cubic feets

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday

The girls swim team is hosting a fund raiser. they would like to raise at least $500. they are selling candles for $5 and flower arrangements for $6. the girls estimate that at most they will sell 200 items.