Forward Grade 6 Ratios & Proportional Relationships. Practice it free.

Use a conversion factor with pounds in the numerator so ounces cancel: $112 \text{ oz} \times \dfrac{1 \text{ lb}}{16 \text{ oz}} = 7 \text{ lb}$.

Multiply by 100: $0.36 \times 100 = 36\%$.

Discount: $\dfrac{15}{100} \times \text{\char36}200 = \text{\char36}30\textsf{.}$ Sale price: $\text{\char36}200 - \text{\char36}30 = \text{\char36}170\textsf{.}$

$\dfrac{90}{120} = 0.75 = 75\%\textsf{.}$

Convert $20\%$ to a decimal and multiply: $0.20 \times 250 = 50$ students.

$20\% = 0.2\textsf{.}$ Then $0.2 \times 90 = 18\textsf{.}$

Convert: $25\% = 0.25$. Then $0.25 \times 70 = 17.5$.

$\dfrac{51}{60} = 0.85 = 85\%$.