A machine produces 374 bolts in 33 minutes. At the same rate, how many minutes would it take to produce 272 bolts?

Answer 1

M/33 = 272/374

M = 33(272)/374 = 24 minutes to produce 272 bolts

or

M/272 = 33/374

the ratio of minutes to bolts is a constant

or the ratio of minutes to minutes = the ratio of bolts to bolts: M/33 = 272/374