Mrs.lim bought 3 bags for $100. Bag A cost $10 less than Bag B.Bag B cost $20 Less than Bag C. How much did Mrs. Lim pay for bag C.?

Question

Mrs.lim bought 3 bags for $100. Bag A cost $10 less than Bag B.Bag B cost $20 Less than Bag C. How much did Mrs. Lim pay for bag C.?

Answer 1

We need a bit of algebra.

Let Bag A have cost of $x, then...

x + (x + 10) + (x + 30) = 100

=> 3x + 40 = 100

=> x = 20

A = $20, B = $30, C = $50