Answer:
[tex] \frac{4}{8} \div 15 = \frac{4}{8} \times \frac{15}{1} = \frac{60}{8} or7 \frac{4}{8} \div \frac{4}{4} =7 \frac{1}{2} [/tex]
[tex] \frac{2}{8} \div 15 = \frac{2}{8} \times \frac{15}{1} = \frac{30}{8} or3 \frac{6}{8} \div \frac{2}{2} = 3 \frac{3}{4} [/tex]
[tex]7 \frac{1}{2} + 3 \frac{3}{4} = 7 \frac{2}{2} + 3 \frac{3}{4} = 10 \frac{5}{6}[/tex]
each pair use 7 1/2g of carbon and 3 3/4g of rubber in total 10 5/6g is use in all
Step-by-step explanation:
Hope it help