PSLE Linda saved $1260 in March. This amount was a 40% increase from what she saved in February. The amount she saved in April was a 10% decrease from what she saved in March.
- What was the total amount that Linda saved from February to April?
- What was the percentage increase in the amount Linda saved in April compared to February?
|
Savings |
February |
100% |
|
Change |
+ 40% |
|
March |
140% |
100 u |
Change |
|
- 10 u |
April |
|
90 u |
(a)
Savings in February = 100%
Savings in March = 100% + 40% = 140%
140% = 1260
1% = 1260 ÷ 140 = 9
Savings in February
= 100%
= 100 x 9
= $900
Savings in March = 100 u
Savings in April = 100 u - 10 u = 90 u
100 u = 1260
1 u = 1260 ÷ 100 = 12.6
Savings in April
= 90 u
= 90 x 12.6
= $1134
Total savings from February to April
= 900 + 1260 + 1134
= $3294
(b)
Increase in savings in April compared to February
= 1134 - 900
= $234
Percentage increase
=
Increase in savingsSavings in February x 100%
=
234900 x 100%
= 26%
Answer(s): (a) $3294; (b) 26%