Sagot :
3 minutes - 153 words
10 minutes - x words
[tex]3x=153 \cdot 10 \\ 3x=1530 \\ x=510[/tex]
He can type 510 words in 10 minutes.
10 minutes - x words
[tex]3x=153 \cdot 10 \\ 3x=1530 \\ x=510[/tex]
He can type 510 words in 10 minutes.