Question

Which equation has the same unknown value as 405 ÷ 15 = ? A 405 × ? = 15 B ? ÷ 405 = 15 C 15 × ? = 405 D ? ÷15 = 405

Answer 1

Its C. 15 x ? = 405
The question is kind of like writing a fact family.
You need to find the same unknown number that belongs in the question mark in the rest of them.
So since 405 ÷ 15 = 27,
C. 15 x 27 = 405
? = 27
(It also needs to make sense :P)

Answer 2

C bc you can multiply 15 by ? To get the same answer