A store sells 4 cans of nuts for$10 .How much would it cost you to buy 3 cans of nuts?

$7.50

Step-by-step explanation:

4 cans > costs $10

Find unit cost:

1 can > costs $ (10/4)

Multiply unit cost by number of items

3 cans > costs $ (10/4) x 3 cans = $7.50

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5