Scan QR code or get instant email to install app

Question:

# Jack and Jill were picking weeds in the garden. Jack picked $\frac{\mathrm{1} }{\mathrm{3}}$ of the weeds, and Jill picked $\frac{\mathrm{1} }{\mathrm{5}}$ of them. What fraction of the weeds did they pick together?

A $\frac{\mathrm{8} }{\mathrm{15}}$
explanation

This problem requires you to add two fractions without a calculator. The least common denominator is 15. The fraction $\frac{\mathrm{1} }{\mathrm{5}}=\frac{\mathrm{3} }{\mathrm{15}}$ and $\frac{\mathrm{1} }{\mathrm{3}}=\frac{\mathrm{5} }{\mathrm{15}}$ . Then $\frac{\mathrm{3} }{\mathrm{15}}+\frac{\mathrm{5} }{\mathrm{15}}=\frac{\mathrm{8} }{\mathrm{15}}$