PSLE Linda saved $1150 in May. This amount was a 15% increase from what she saved in April. The amount she saved in June was a 40% decrease from what she saved in May.
- What was the total amount that Linda saved from April to June?
- What was the percentage decrease in the amount Linda saved in June compared to April?
|
Savings |
April |
100% |
|
Change |
+ 15% |
|
May |
115% |
100 u |
Change |
|
- 40 u |
June |
|
60 u |
(a)
Savings in April = 100%
Savings in May = 100% + 15% = 115%
115% = 1150
1% = 1150 ÷ 115 = 10
Savings in April
= 100%
= 100 x 10
= $1000
Savings in May = 100 u
Savings in June = 100 u - 40 u = 60 u
100 u = 1150
1 u = 1150 ÷ 100 = 11.5
Savings in June
= 60 u
= 60 x 11.5
= $690
Total savings from April to June
= 1000 + 1150 + 690
= $2840
(b)
Decrease in savings in June compared to April
= 1000 - 690
= $310
Percentage decrease
=
Decrease in savingsSavings in April x 100%
=
3101000 x 100%
= 31%
Answer(s): (a) $2840; (b) 31%