Acarpenter bought bolts to finish a project. in all, the bolts weighed 3 pounds. there are 16 ounces in 1 pound. if each bolt weighed 1/15 ounce, how many bolts did the carpenter buy?

STEP 1
calculate total ounces

= 16 oz/lb * 3 lbs
= 48 ounces

STEP 2
calculate number of bolts; divide total weight (48 ounces) by ounces per bolt

x= number of bolts purchased

x= 48 ounces ÷ 1/15 oz per bolt

x= 48 ÷ 1/15
to divide by fraction; multiply by reciprocal of 1/15

x= 48 * 15/1

x= 720 bolts

ANSWER: He purchased 720 bolts

Hope this helps! :)