Question

Of the 5 numbers whose average is 78, the first is 2/11 times the sum of other 4. The first number is

A) 90 B) 40 C) 60 D) 120

Answer 1

Answer:

C) 60. ;)

Step-by-step explanation:

Let the numbers be a,b,c,d and e;

According to the question,

(a+b+c+d+e)/5 = 78; => b+c+d+e = 390 - a;

Now,

a =(2/11) * (b+c+d+e);

Substituting the value of a, we get,

a = 60

Answer 2

Answer:

option c = 60

Step-by-step explanation:

Thanks.............