Question

Sophie can type 128 words in 3 minutes. How many minutes will it take her to type 576 words

Answer 1

13. 5 minutes

Explanation:

This is a simple proportion problem. Make two fractions where one item is always on the top and the other on the bottom.

`(3 min)/(128 words) = (x min)/( 576 words)`

Now, cross multiply (multiply the two numbers diagonal from each other and divide the diagonal with the x value)

576 x 3 = 1, 728

1, 728 / 128 = 13.5