Problema Solution
Robbie gets £6 pocket money each week.
He spends 3/8 of his money on comic's and 1/3 of his money on books.
He saves the rest of his money.
How many weeks will it take him to save £20?
Answer provided by our tutors
Total pocket money = a = 6
Total amount spent = b = (3/8*6) + (1/3*6)
b = 2.25 + 2 = 4.25
Amount saved each week = c = a - b
6 - 4.25
1.75
Weeks required to save 20 = 20/1.75 = 11.43 = 12 week