PSLE Linda saved $195 in July. This amount was a 35% decrease from what she saved in June. The amount she saved in August was a 20% increase from what she saved in July.
- What was the total amount that Linda saved from June to August?
- What was the percentage decrease in the amount Linda saved in August compared to June?
|
Savings |
June |
100% |
|
Change |
- 35% |
|
July |
65% |
100 u |
Change |
|
+ 20 u |
August |
|
120 u |
(a)
Savings in June = 100%
Savings in July = 100% - 35% = 65%
65% = 195
1% = 195 ÷ 65 = 3
Savings in June
= 100%
= 100 x 3
= $300
Savings in July = 100 u
Savings in August = 100 u + 20 u = 120 u
100 u = 195
1 u = 195 ÷ 100 = 1.95
Savings in August
= 120 u
= 120 x 1.95
= $234
Total savings from June to August
= 300 + 195 + 234
= $729
(b)
Decrease in savings in August compared to June
= 300 - 234
= $66
Percentage decrease
=
Decrease in savingsSavings in June x 100%
=
66300 x 100%
= 22%
Answer(s): (a) $729; (b) 22%