Question

Help me out guys

In a 1 km race A wins over B by 80 m or 20second. B can give a start of 100 m to C in 1 km race. Find out that by how much time A will win over C?

a) 47.77
b) 45.90
C) 46.80
d) 47.95
e) None of these

The ans is A

I want to know the step by step procedure ​

Answer 1

Answer:

b)

Step-by-step explanation:

45.90 the answer so......

Answer 2

Step-by-step explanation:

a) 47.77