What you can also do is cross multiply.
40/100=x/130
Multiply each numerator by the opposite denominator...
100x=5200
Simplify...
x=52
There you have it! You can also do what the Guest did by multiplying by .40 because it equals 40%.
What you can also do is cross multiply.
40/100=x/130
Multiply each numerator by the opposite denominator...
100x=5200
Simplify...
x=52
There you have it! You can also do what the Guest did by multiplying by .40 because it equals 40%.