PSLE Linda spent $760 in March. This amount was a 5% decrease from what she spent in February. The amount she spent in April was a 40% increase from what she spent in March.
- What was the total amount that Linda spent from February to April?
- What was the percentage increase in the amount Linda spent in April compared to February?
|
Spending |
February |
100% |
|
Change |
- 5% |
|
March |
95% |
100 u |
Change |
|
+ 40 u |
April |
|
140 u |
(a)
Spending in February = 100%
Spending in March = 100% - 5% = 95%
95% = 760
1% = 760 ÷ 95 = 8
Spending in February
= 100%
= 100 x 8
= $800
Spending in March = 100 u
Spending in April = 100 u + 40 u = 140 u
100 u = 760
1 u = 760 ÷ 100 = 7.6
Spending in April
= 140 u
= 140 x 7.6
= $1064
Total spending from February to April
= 800 + 760 + 1064
= $2624
(b)
Increase in spending in April compared to February
= 1064 - 800
= $264
Percentage increase
=
Increase in spendingSpending in February x 100%
=
264800 x 100%
= 33%
Answer(s): (a) $2624; (b) 33%