On Thursday, Abi, Joelle, Jade and Hilda spent a total of $123. On Friday, Abi spent twice of what she spent on Thursday, Joelle spent the same as what she spent on Thursday, Jade spent $8 less than what she spent on Thursday, and Hilda spent $4 more than what she spent on Thursday. All of them spent an equal amount on Friday. How much did Abi and Hilda spend altogether on Thursday?
|
Abi |
Joelle |
Jade |
Hilda |
Total |
Before |
1 u |
2 u |
2 u + $8 |
2 u - $4 |
$123 |
Change |
x 2 |
|
- $8 |
+ $4 |
|
After |
2 u |
2 u |
2 u |
2 u |
|
Total amount that the four girls spent on Thursday
= 1 u + 2 u + 2 u + 8 + 2 u - 4
= 7 u + 8 - 4
= 7 u + 4
7 u + 4 = 123
7 u = 123 - 4
7 u = 119
1 u = 119 ÷ 7 = 17
Total amount that Abi and Hilda spent on Thursday
= 1 u + 2 u - 4
= 3 u - 4
= 3 x 17 - 4
= 51 - 4
= $47
Answer(s): $47