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A knife is three times the cost of a spoon. 9 spoons and 12 knives cost £82.80 Work out the cost of...
4 months ago
Q:
A knife is three times the cost of a spoon. 9 spoons and 12 knives cost £82.80 Work out the cost of 1 knife. In all working, let k be the cost of a knife and s be the cost of a spoon..
Accepted Solution
A: