1. First, how many 30 words are there in 213 words? It’s 213/30 = 7.1

2. Next, how many minutes, Bob can write 213 words. It is 7.1 X 5 = 35.5 minutes

words/minutes====30/5=======213/x

_30_ = _213_

_5__ __x___

then cross multiply

30X = 1065

then divide both sides by thirty

X = 35.5

The answer is 35.5 minutes

30/5 = 213/x

multiply each side by 5

30 = 1065/x

multiply each side by x

30x = 1065

divide each side by 30

x = 35.5 minutes

30 words 213 words

————– = —————

5 minutes x

NOW, cross multiply and get

30x = 1065

**REMEMBER: 30 times X = 30x; 213 x 5 = 1065

NEXT, DIVIDE BOTH SIDES by 30 to get ‘x’ by itself

30x = 1065

——————

30 30

x = 35.5 WPM

I hope this helps! 🙂 Good luck 🙂