Mark spent $\frac{1}{10}$ of his salary on transport and$\frac{1}{5}$ of it on food. He also gave $\frac{1}{2}$ of his salary to his parents. He saved the remaining $480.

a) What fraction of the salary did he save?

b) How much money did he give his parents?

c) How much did he spend on food and transport?

a)$\frac{1}{3}$

b) \$1000

c) $220

b) \$1000

c) $220

a)$\frac{1}{5}$

b) \$1200

c) $240

b) \$1200

c) $240

a)$\frac{1}{7}$

b) \$1400

c) $260

b) \$1400

c) $260

a)$\frac{1}{9}$

b) \$1600

c) $280

b) \$1600

c) $280

None of the above