Question

Which equation represents this statement? One-third of a number is 21.

a. 21 x = 3
b. 21 3 = x
c. 1 3 x = 21
d. 1 3 (21) = x?

Answer 1

Assuming c says 1/3x=21, that's the right answer. if you read too quickly you might rush into thinking x=7, but if course it is 63.