Question

when class 11Y1 found that their favourite teacher,Mr Musson, was leaving they decided to organise a party for him. Lewis, one of the class members, wants to buy 38 cartons of juice. he can buy a single carton of juice for 45p. he can buy a pack of 4 cartons for £1.56. Lewis buys all the cartons for the least possible amount of money. how much did he spend?

Answer 1

Given :  Lewis can buy a single carton of juice for 45p. he can buy a pack of 4 cartons for £1.56. Lewis buys all the cartons for the least   possible amount of money

To find : how much did he spend

Solution:

He wanted to buy  38 carton of juice

Single carton of juice cost  = 45p = £ 0.45

pack of 4 carton cost   = £1.56

38 = 4 * 9  + 2

Hence he will buy  9 pack of 4 cartons   & 2 single carton of juice

Cost = 9 * 1.56  +  2(0.45)

= 14.04 + 0.9

= £14.94

Lewis spent £14.94

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