Natalie received $50 more pocket money than Yoko each month. Both of them spent $150 per month and saved the rest. After a few months, Natalie saved $1710 but Yoko only saved $1260.

1. What was Natalie's monthly pocket money?
2. Yoko wanted to save a total of $2380. How many more months did she need in order to save this amount?

(a)
Total amount that Natalie saved more than Yoko
= 1710 - 1260
= $450

Number of months taken for each of them to save their amounts
= 450 ÷ 50
= 9

Amount that Natalie saved each month
= 1710 ÷ 9
= $190

Natalie's monthly pocket money
= 190 + 150
= $340

(b)
Yoko's monthly pocket money
= 340 - 50
= $290

Amount that Yoko saved each month
= 290 - 150
= $140

Remaining amount that Yoko needed to save
= 2380 - 1260
= $1120

Number of more months that Yoko needed to save the remaining $1120
= 1120 ÷ 140
= 8

Answer(s): (a) $340; (b) 8