Math problem help?

Question

If metal costs $2.65 per 100g, how much metal do I get for paying $3.80?

 

Answer 1

The metal costs $2.65 per 100g

For paying one $ you get (100/2.65) g

There fore  for paying $3.80 you get (100/2.65) * 3.80

= 143.396 g

you get 143.936 grams metal for $ 3.80.