Question

A piece of cable 8.5 cm long weighs 52 grams. How much does a cable that is 10 cm long weigh

Answer 1

8.5 cm cable weighs = 52 grams

1 cm of cable weighs = $\frac{52}{8.5}grams$
                                      
                                      = $52/ \frac{85}{10}$ grams
                                      = $52* \frac{10}{85}$ grams
                                      = $\frac{520}{85}$ grams
                                      = $6.11764$ grams
Rounding it up = 6. 10000 grams

Then, 

10 cm of cable weighs = $6.10*10$ grams
                                                = $61.0$ grams