Sheet # 81 Critical Thinking
Name: _____________________ Date_____________
Show and explain your work. Draw pictures or make tables to explain your answer.
Gretchen has two choices of swimming clubs. One has a sign-up cost of $160 and fees of $39 per month. The second club has a sign-up cost of $250 and fees of $32 per month. After how many payments will the second swimming club become cheaper than the first club?
Answer for sheet # 81
There are many ways you can solve this problems. You can make a table, draw graphs or solve equation.
Month
First Club
Second Club
1
$160 + 39 = 199
$250 + $32 = $282
2
$189 + 39 = 238
$282 + $32 = 314
3
$277
$346
4
$316
$378
5
$355
$410
6
$394
$442
7
433
474
8
472
506
9
511
538
10
550
570
11
589
602
12
628
634
13
667
666
In the 13th month, the second swimming club will become cheaper than the first swimming club.