PSLE
Linda saved $1035 in March. This amount was a 15% increase from what she saved in February. The amount she saved in April was a 40% decrease from what she saved in March.

1. What was the total amount that Linda saved from February to April?
2. What was the percentage decrease in the amount Linda saved in April compared to February?

	Savings
February	100%
Change	+ 15%
March	115%	100 u
Change		- 40 u
April		60 u

(a)
Savings in February = 100%
Savings in March = 100% + 15% = 115%

115% = 1035

1% = 1035 ÷ 115 = 9

Savings in February
= 100% 
= 100 x 9
= $900

Savings in March = 100 u
Savings in April = 100 u - 40 u = 60 u 

100 u = 1035

1 u = 1035 ÷ 100 = 10.35

Savings in April
= 60 u
= 60 x 10.35
= $621

Total savings from February to April
= 900 + 1035 + 621
= $2556

(b)
Decrease in savings in April compared to February
= 900 - 621 
= $279

Percentage decrease
= ^{Decrease in savings}_{Savings in February} x 100%
= ²⁷⁹₉₀₀ x 100%
= 31%

Answer(s): (a) $2556; (b) 31%