PSLE Linda saved $960 in April. This amount was a 20% 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 |
+ 20% |
|
April |
120% |
100 u |
Change |
|
- 35 u |
May |
|
65 u |
(a)
Savings in March = 100%
Savings in April = 100% + 20% = 120%
120% = 960
1% = 960 ÷ 120 = 8
Savings in March
= 100%
= 100 x 8
= $800
Savings in April = 100 u
Savings in May = 100 u - 35 u = 65 u
100 u = 960
1 u = 960 ÷ 100 = 9.6
Savings in May
= 65 u
= 65 x 9.6
= $624
Total savings from March to May
= 800 + 960 + 624
= $2384
(b)
Decrease in savings in May compared to March
= 800 - 624
= $176
Percentage decrease
=
Decrease in savingsSavings in March x 100%
=
176800 x 100%
= 22%
Answer(s): (a) $2384; (b) 22%