Correct option (c) 0.80 inch
Explanation:
The average rainfall in six days = 0.5 inch.
Hence, total rainfall in six days = 0.5 × 6 = 3 inch
The average rainfall in a city for the first four days = 0.4 inch
So, total rainfall in these four days = 0.4 × 4 = 1.6 inch
Hence, rainfall in the last two days = 3 – 1.6 = 1.4 inch
Now, it’s given that the rainfall on the last two days was in the ratio of 4:3. Hence, rainfall on the fifth day
= 1.4 × [4/(4 + 3)] = 1.4 × (4/7) = 0.8 inch