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timofeeve [1]
3 years ago
15

Seven cakes cost £2.10 how much do ten cakes cost

Mathematics
1 answer:
max2010maxim [7]3 years ago
3 0
\begin{array}{ccc}7\ cakes&-&\£2.10\\\\10\ cakes&-&x\end{array}\ \ \ |cross\ multiply\\\\7\cdot x=10\cdot\ \£2.10\\\\7x=\£21.00\ \ \ \ |divide\ both\ sides\ by\ 7\\\\\boxed{x=\£3.00}\leftarrow answer
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