Question

Which of the following is in proportion? *
a)21 : 6 :: 35 : 10
b)4 : 6 :: 8 : 11
c)3 : 5 :: 1 : 4
d)9 : 10 :: 4 : 5​

Answer 1

Answer:

(a) is the correct one

Step-by-step explanation:

Because

product of extremes=product of means

21×10=35×6

210=210

So, yes it is in proportion

hope it helps you

mark as brainliest