PSLE Linda saved $560 in July. This amount was a 40% increase from what she saved in June. The amount she saved in August was a 5% decrease from what she saved in July.
- What was the total amount that Linda saved from June to August?
- What was the percentage increase in the amount Linda saved in August compared to June?
|
Savings |
June |
100% |
|
Change |
+ 40% |
|
July |
140% |
100 u |
Change |
|
- 5 u |
August |
|
95 u |
(a)
Savings in June = 100%
Savings in July = 100% + 40% = 140%
140% = 560
1% = 560 ÷ 140 = 4
Savings in June
= 100%
= 100 x 4
= $400
Savings in July = 100 u
Savings in August = 100 u - 5 u = 95 u
100 u = 560
1 u = 560 ÷ 100 = 5.6
Savings in August
= 95 u
= 95 x 5.6
= $532
Total savings from June to August
= 400 + 560 + 532
= $1492
(b)
Increase in savings in August compared to June
= 532 - 400
= $132
Percentage increase
=
Increase in savingsSavings in June x 100%
=
132400 x 100%
= 33%
Answer(s): (a) $1492; (b) 33%