PSLE Linda saved $560 in April. This amount was a 40% increase from what she saved in March. The amount she saved in May was a 35% decrease from what she saved in April.
- What was the total amount that Linda saved from March to May?
- What was the percentage decrease in the amount Linda saved in May compared to March?
|
Savings |
March |
100% |
|
Change |
+ 40% |
|
April |
140% |
100 u |
Change |
|
- 35 u |
May |
|
65 u |
(a)
Savings in March = 100%
Savings in April = 100% + 40% = 140%
140% = 560
1% = 560 ÷ 140 = 4
Savings in March
= 100%
= 100 x 4
= $400
Savings in April = 100 u
Savings in May = 100 u - 35 u = 65 u
100 u = 560
1 u = 560 ÷ 100 = 5.6
Savings in May
= 65 u
= 65 x 5.6
= $364
Total savings from March to May
= 400 + 560 + 364
= $1324
(b)
Decrease in savings in May compared to March
= 400 - 364
= $36
Percentage decrease
=
Decrease in savingsSavings in March x 100%
=
36400 x 100%
= 9%
Answer(s): (a) $1324; (b) 9%