Yoko received $30 more pocket money than Joelle each month. Both of them spent $100 per month and saved the rest. After a few months, Yoko saved $1750 but Joelle only saved $1330.

1. What was Yoko's monthly pocket money?
2. Joelle wanted to save a total of $2280. How many more months did she need in order to save this amount?

(a)
Total amount that Yoko saved more than Joelle
= 1750 - 1330
= $420

Number of months taken for each of them to save their amounts
= 420 ÷ 30
= 14

Amount that Yoko saved each month
= 1750 ÷ 14
= $125

Yoko's monthly pocket money
= 125 + 100
= $225

(b)
Joelle's monthly pocket money
= 225 - 30
= $195

Amount that Joelle saved each month
= 195 - 100
= $95

Remaining amount that Joelle needed to save
= 2280 - 1330
= $950

Number of more months that Joelle needed to save the remaining $950
= 950 ÷ 95
= 10

Answer(s): (a) $225; (b) 10