How to solve this problem?

[gulat]

Came across this problem in one of the practice papers that has me foxed. Can any keen mathematicians in the group please help:

Magda and her friends go the cinema. They buy 1 large tub of popcorn, 4 drinks and 10 packets of crisps. The bill comes to £10.89

Lena and her friends go the cinema. They buy 1 large tub of popcorn, 3 drinks and 7 packets of crisps. The bill comes to £8.64

How much would it cost to buy 1 large tub of popcorn, 1 drink and 1 packet of crisp

Thanks in advance for your help

[leanmeamum]

this thread has the answer
http://www.elevenplusexams.co.uk/forum/ ... =2&t=35688

Hope it helps

[gulat]

Thanks leanmeamum

Much appreciated

Though I would say that is lot to expect from a 11 year old