Answer:
22.5%
Explanation:
1 person is doing 0.025 of the work. What is that in percent??
We convert decimal to percentage by multiplying by 100 and sticking the "%" sign.
So,
0.025 * 100 = 2.5%
Hence, 1 person is doing 2.5% of the total 25% of the work alloted to 4 persons.
The other 3 would do rest of the work, that would be:
25% - 2.5% = 22.5% of the work (rest 3 person would be)