Question

The mean proportional of a and b is 10 and the value of a is four times the value of b. The value 14. 16 of a + b (a > 0, b>0) is (c) 25 22 (a) 20 (d) 20 21 (b) 25 15. If 8:::16:35 (c) 101 (a) 35 (d) 29 please answer this question I will mark you as brainliest.​

Answer 1

Answer:

We know that the mean proportion of two numbers a,b is given by

ab

So,

ab

=10

Also given a=4b

So, using this value we get

4b×b

=10

⇒2b=10

⇒b=5

Substituting b=5in a=4b we get

a=4×5

a=20

So, the value of a+b=20+5

(a+b)=25