Problema Solution
Olivia works at a craft store and can makes 5 stone crafts in 45 minutes. If she had been working for 30 minutes on an order for 8 stone crafts, how much longer does she need to work to complete the order?
Answer provided by our tutors
the rate of Olivia is 5 stones crafts / 45 minutes
if x is the time she needs to make 8 stone crafts we can write the following proportion
5 : 45 = 8 : x
x = (45*8)/5
x = 72 minutes
since she already worked for 30 min she will need 72 - 30 = 42 min more to finish the order of 8 stone crafts.