Kimber and Andy each can assemble 12 circuit boards in one hour. Kimber
works for 6 hours and Andy works for 12 hours. How many more circuit
boards does Andy assemble than Kimber?

andy had 72 more circuit boards done than kimber

Step-by-step explanation:

ok so if they both can get 12 circuit boards done in one hour. kimber gets 12*6= 72 circuit boards done in 6 hours and stops working. and andy keeps working so at 6 hours she has the same amount which is 72 circuit boards done than she also works another 6 hours so she has 144 circuit boards done in 12 hours.

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

the answer is 45 i just did it on oddesy ware