"Ben can type 153 words in 3 min. At this rate how many words can he type in 10 min.?"
Ben can type 510 words in ten minutes.
153 words/3 minutes = 153/3
= 153 words ÷ 3 / 3 min ÷ 3
= 51 words / 1 min
51 x 10 (minutes) = 510.
15 remander 3 because 153 devided by 10 is 15 remander 3