PSLE Linda saved $1350 in April. This amount was a 50% increase from what she saved in March. The amount she saved in May was a 10% decrease from what she saved in April.
- What was the total amount that Linda saved from March to May?
- What was the percentage increase in the amount Linda saved in May compared to March?
|
Savings |
March |
100% |
|
Change |
+ 50% |
|
April |
150% |
100 u |
Change |
|
- 10 u |
May |
|
90 u |
(a)
Savings in March = 100%
Savings in April = 100% + 50% = 150%
150% = 1350
1% = 1350 ÷ 150 = 9
Savings in March
= 100%
= 100 x 9
= $900
Savings in April = 100 u
Savings in May = 100 u - 10 u = 90 u
100 u = 1350
1 u = 1350 ÷ 100 = 13.5
Savings in May
= 90 u
= 90 x 13.5
= $1215
Total savings from March to May
= 900 + 1350 + 1215
= $3465
(b)
Increase in savings in May compared to March
= 1215 - 900
= $315
Percentage increase
=
Increase in savingsSavings in March x 100%
=
315900 x 100%
= 35%
Answer(s): (a) $3465; (b) 35%