PSLE Linda saved $1400 in March. This amount was a 40% increase from what she saved in February. The amount she saved in April was a 35% decrease from what she saved in March.
- What was the total amount that Linda saved from February to April?
- What was the percentage decrease in the amount Linda saved in April compared to February?
|
Savings |
February |
100% |
|
Change |
+ 40% |
|
March |
140% |
100 u |
Change |
|
- 35 u |
April |
|
65 u |
(a)
Savings in February = 100%
Savings in March = 100% + 40% = 140%
140% = 1400
1% = 1400 ÷ 140 = 10
Savings in February
= 100%
= 100 x 10
= $1000
Savings in March = 100 u
Savings in April = 100 u - 35 u = 65 u
100 u = 1400
1 u = 1400 ÷ 100 = 14
Savings in April
= 65 u
= 65 x 14
= $910
Total savings from February to April
= 1000 + 1400 + 910
= $3310
(b)
Decrease in savings in April compared to February
= 1000 - 910
= $90
Percentage decrease
=
Decrease in savingsSavings in February x 100%
=
901000 x 100%
= 9%
Answer(s): (a) $3310; (b) 9%