Question

henry has \\(\frac{9}{10}\\) kilogram of potting soil. he uses \\(\frac{2}{5}\\) of the potting soil to plant some roses. how much potting soil does henry use? \\(\circ\\) a. \\(\frac{11}{50}\\) kilogram \\(\circ\\) b. \\(\frac{1}{10}\\) kilogram \\(\circ\\) c. \\(\frac{11}{15}\\) kilogram \\(\circ\\) d. \\(\frac{18}{50}\\) kilogram

Explanation:

Step1: Identify the operation

To find the amount of potting soil Henry uses, we need to multiply the total amount of potting soil by the fraction he uses. So we calculate $\frac{9}{10} \times \frac{2}{5}$.

Step2: Multiply the fractions

When multiplying fractions, we multiply the numerators together and the denominators together. So, $\frac{9\times2}{10\times5}=\frac{18}{50}$.

Answer:

D. $\frac{18}{50}$ kilogram