If I can buy 219x for 0.41y, how many of x can I get for 1y?

Question

0.41y = 219x

1y = ?

What is 1y?

Answer 1

You can set up a proportion: let "a" = the no. of x's.

219x/0.41y = ax/1y

Cross-multiply: 0.41axy = 219xy

Solve for "a" a = 219xy/0.41xy

The xy's cancel, "a" = 534.1.