PSLE Linda saved $450 in July. This amount was a 50% increase from what she saved in June. The amount she saved in August was a 10% 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 |
+ 50% |
|
July |
150% |
100 u |
Change |
|
- 10 u |
August |
|
90 u |
(a)
Savings in June = 100%
Savings in July = 100% + 50% = 150%
150% = 450
1% = 450 ÷ 150 = 3
Savings in June
= 100%
= 100 x 3
= $300
Savings in July = 100 u
Savings in August = 100 u - 10 u = 90 u
100 u = 450
1 u = 450 ÷ 100 = 4.5
Savings in August
= 90 u
= 90 x 4.5
= $405
Total savings from June to August
= 300 + 450 + 405
= $1155
(b)
Increase in savings in August compared to June
= 405 - 300
= $105
Percentage increase
=
Increase in savingsSavings in June x 100%
=
105300 x 100%
= 35%
Answer(s): (a) $1155; (b) 35%