Fill in the blanks.
Adam receives some allowance.
If he increases his spending by 40%,
his savings decreases by 60%.
- Amount of spending = _____ u
- Amount of savings = _____ u
- Total amount of allowance = _____ u
- Difference in the amount of spending and savings = _____ u
|
Spending |
Savings |
Before |
5 x 3 = 15 u |
5 x 2 = 10 u |
If change |
+ 2 x 3 = + 6 u |
- 3 x 2 = - 6 u |
After |
7 x 3 = 21 u |
2 x 2 = 4 u |
(a)
Change percentage into units.
40% of spending = 60% of savings
25 of spending =
35 of savings
Make the numerators the same.
LCM of 2 and 3 = 6
2 x 35 x 3 of spending =
3 x 25 x 2 of savings
615 of spending =
610 of savings
Amount of spending = 15 u
(b)
Amount of savings = 10 u
(c)
Total amount of allowance
= 15 u + 10 u
= 25 u
(d)
Difference in the amount of spending and savings
= 15 u - 10 u
= 5 u
Answer(s): (a) 15; (b) 10; (c) 25; (d) 5