Sheet # 59 Critical Thinking
Name: _____________________ Date_____________
Show and explain your work. Draw pictures or make tables to explain your answer.
Shante and Luis each have $10 in the bank. Every month, Shante adds $1 to her account and Luis adds $3 to his account. In how many months will Luis have twice as much as Shante?
Answer for sheet # 59
Equation:
$10 + 3 n = 2 ( $10 + n) where n is the number of week.
n = 10
Week #
Shante
Luis
Starting
$10
$10
week 1
11
13
Week 2
12
16
3
13
19
4
14
22
5
15
25
6
16
28
7
17
31
8
18
34
9
19
37
10
20
40