Question

M, S and R are the marks secured by Rajani in three tests. S : M = 7 : 8 and M : R = 6 : 5. M is 8 more than R, then find the difference between M and S.​

Answer 1

Answer:

M-S =6

Step-by-step explanation:

S/M = 7/8 ; 7M = 8S

M/R = 6/5. ===>5M = 6R

M is 8 more than R, M = R+8. in. 5M = 6R,

5M = 6(M-8)

5M = 6M-48

M = 48

7M = 8S. ====> 7(48) = 8S

8S = 336

S = 42

The difference between M and S = 48-42 = 6