PSLE Linda spent $980 in March. This amount was a 40% increase from what she spent in February. The amount she spent in April was a 5% decrease 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 |
+ 40% |
|
March |
140% |
100 u |
Change |
|
- 5 u |
April |
|
95 u |
(a)
Spending in February = 100%
Spending in March = 100% + 40% = 140%
140% = 980
1% = 980 ÷ 140 = 7
Spending in February
= 100%
= 100 x 7
= $700
Spending in March = 100 u
Spending in April = 100 u - 5 u = 95 u
100 u = 980
1 u = 980 ÷ 100 = 9.8
Spending in April
= 95 u
= 95 x 9.8
= $931
Total spending from February to April
= 700 + 980 + 931
= $2611
(b)
Increase in spending in April compared to February
= 931 - 700
= $231
Percentage increase
=
Increase in spendingSpending in February x 100%
=
231700 x 100%
= 33%
Answer(s): (a) $2611; (b) 33%