Gillian received $70 more pocket money than Zoe each month. Both of them spent $100 per month and saved the rest. After a few months, Gillian saved $1560 but Zoe only saved $1280.

1. What was Gillian's monthly pocket money?
2. Zoe wanted to save a total of $2240. How many more months did she need in order to save this amount?

(a)
Total amount that Gillian saved more than Zoe
= 1560 - 1280
= $280

Number of months taken for each of them to save their amounts
= 280 ÷ 70
= 4

Amount that Gillian saved each month
= 1560 ÷ 4
= $390

Gillian's monthly pocket money
= 390 + 100
= $490

(b)
Zoe's monthly pocket money
= 490 - 70
= $420

Amount that Zoe saved each month
= 420 - 100
= $320

Remaining amount that Zoe needed to save
= 2240 - 1280
= $960

Number of more months that Zoe needed to save the remaining $960
= 960 ÷ 320
= 3

Answer(s): (a) $490; (b) 3