The ratio of apples to oranges in a basket is 3:4. If there are 21 apples, how many oranges are there?

Step-by-step solution

1. Set up the proportion $\frac{\text{apples}}{\text{oranges}}=\frac{3}{4}$
2. Let the number of oranges be $x$. $\frac{21}{x}=\frac{3}{4}$
3. Cross‑multiply: $3x=84$
4. Solve for $x$: $x=28$

Concept tested: ratio proportion

Published 7 October 2026 · How this solution was prepared and checked