Carla buys 4kg of apples for $10. How much will Ahmed pay for 14kg of apples at the same shop?
Find price per kg .... then multiply by kg
10 / 4 * 14 = ____________ dollars
We can solve this with proportions:
\(\frac{4}{10}=\frac{14}{x}\)
cross multiply: \(4x=10\cdot \:14\)
\(4x=140\)
\(x=35\)
35 dollars