Question

A's capacity to do a work is the average of
C's capacity and twice B's capacity. B's capacity is
the average of C's capacity and half of A's capacity.
Find the ratio of capacities of A and B.
(A) 5:8 (B) 8:5 (C) 4:5 (D) 5:4​

Answer 1

Answer:

option c is the right answer

hope it's help u....

Answer 2

Answer:

Step-by-step explanation:

Lets

average of A's capacity = (C+2B)/2

2A=C+2B............(1)

average of B's capacity = (C+0.5A)/2

2B=C+0.5A.........(2)

from equation 2nd

2B=C+0.5A

8B=4C+2A............(3)

so,

put the value of equation 1st on equation 3rd

8B=4C+C+2B

6B=5C.......(4)

put the value of equation 4th on equation 2ND

10x(2B=C+0.5A)

20B=10C+5A

20B=12B+5A

8B=5A

ratio of capacities of A and B.

8:5...Option(B).