Question

If 12 dolls cost $60. what will 72 dolls cost

Answer 1

72 divide 12 equals 6 times 60 equals 360

Answer 2

We can set up a proportion:

12/60 = 72/x

Cross multiply:

12x = 4320

Divide 12 to both sides:

x = 360

Therefore, 72 dolls will cost $360