Sabrina had a sum of money. She spent $70 on a blouse and 58 of the remainder on a blazer. She was left with 15 of the original sum of money.
- What was the total amount Sabrina spent?
- How much money did Sabrina have at first?
Blouse |
Remaining amount |
|
Blazer |
Left |
$70 |
5 |
3 |
4x3 = 12 u |
1x3 = 3 u |
7 u |
5 u |
3 u |
(a)
Fraction of the remaining amount left
= 1 -
58=
38The amount left is repeated.
Make the numerators the same. LCM of 3 and 1 is 3.
38 Remaining amount =
15 Total amount
3x18x1 Remaining amount =
1x35x3 Total amount
38 Remaining amount =
315 Total amount
Amount that Sabrina spent on the blouse
= 12 u - 5 u
= 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Total amount that Sabrina spent
= 7 u + 5 u
= 12 u
= 12 x 10
= $120
(b)
Total amount that Sabrina had at first
= 15 u
= 15 x 10
= $150
Answer(s): (a) $120; (b) $150