Question

Are 12, 21, 60 & 85 in proportion?

Answer 1

Answer:

No, 12,21,60 and 85 are not in proportion.

Step-by-step explanation:

Ratio of 12to 21 = 12 /21=12÷3 / 21 ÷ 3

                          = 4 / 7 =4 :7

Ratio of 60 to 85 = 65 /85 =60÷ 5 /85 ÷ 5

                              =12 /17

Since , 4 /7 ≠ 12/ 17

So, 12,21 ,60 and 85 are not in proportion