Leo has 100 coins in his piggy bank. all coins are either nickels, or dimes, or quarters. there are as many nickels as dimes and quarters together. how much money are nickels in leo's piggy bank worth? will mark !

The volume of a cube is 8 in to the 3rd power. how long is each side?

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?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,