PSLE Linda saved $980 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% = 980
1% = 980 ÷ 140 = 7
Savings in June
= 100%
= 100 x 7
= $700
Savings in July = 100 u
Savings in August = 100 u - 5 u = 95 u
100 u = 980
1 u = 980 ÷ 100 = 9.8
Savings in August
= 95 u
= 95 x 9.8
= $931
Total savings from June to August
= 700 + 980 + 931
= $2611
(b)
Increase in savings in August compared to June
= 931 - 700
= $231
Percentage increase
=
Increase in savingsSavings in June x 100%
=
231700 x 100%
= 33%
Answer(s): (a) $2611; (b) 33%