10.2 divided by (unknown number) = 0.8. Find the unknown number

Question

Mathematics

Samantha Lyons

8 May, 04:16

10.2 divided by (unknown number) = 0.8. Find the unknown number

+4

Answers (2)

Know the Answer?

Shannon · Answer 1

x = 12.75

Step-by-step explanation:

10.2 : x = 0.8

x = 10.2 : 0.8

= 102/10 : 8/10

= 102/10 * 10/8

= 102/8

= 12.75

Ace Kirby · Answer 2

12.75

Step-by-step explanation:

if 10.2 / y = 0.8,

then 10.2/y = 0.8/1.

(cross multiply), we have that

10.2*1=9.8*y

so, 10.2=0.8y

(divide both sides by the coefficient of y)

y=10.2/0.8

y = 12.75