PSLE Linda saved $900 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% = 900
1% = 900 ÷ 150 = 6
Savings in March
= 100%
= 100 x 6
= $600
Savings in April = 100 u
Savings in May = 100 u - 10 u = 90 u
100 u = 900
1 u = 900 ÷ 100 = 9
Savings in May
= 90 u
= 90 x 9
= $810
Total savings from March to May
= 600 + 900 + 810
= $2310
(b)
Increase in savings in May compared to March
= 810 - 600
= $210
Percentage increase
=
Increase in savingsSavings in March x 100%
=
210600 x 100%
= 35%
Answer(s): (a) $2310; (b) 35%