Question

1) Ms. Kitts works at a music store. Last week she sold 6 more than 3 times the number of CDs that she sold this week. Ms. Kitts sold a total of 108 CDs over the 2 weeks. Which system of equations can be used to find L, the number of CDs she sold last week, and t, the number of CDs she sold this week?​

Answer 1

L = 3t + 6

108 = L + t

Explanation:

first, define the variables:

L = # of CDs sold last week

t = # of CDs sold this week

then, let's write what the words of problem tells us in numbers:

"Last week (L), she sold 6 more (+ 6) than 3 times the number of CDs she sold this week (3t)

L = 3t + 6

"She sold a total of 108 CDs over 2 weeks (L + t)

108 = L + t