How many workers are required for completing the construction work in 10 days ?
A. 20% of the work can be completed by 8 workers in 8 days.
B. 20 workers can complete the work in 16 days.
C. One-eighth of the work can be completed by 8 workers in 5 days.

NOTE :- $$\frac{M1 * D1}{W1}$$ = $$\frac{M2 * D2}{W2}$$

where M-> no. of men

D-> no. of days

W-> no. of days

I : Let n workers are required to finish work in 10 days. Let work is 100 units. 20% of work is 20 units.

$$\frac{8*8}{20}$$ = $$\frac{10*n}{100}$$

=> n = 32.

Thus, I is sufficient.

II : Let work is 100 units.

$$\frac{20*16}{100}$$ = $$\frac{10*n}{100}$$

=> n = 32

Thus, II is sufficient.

III : Let work is 100 units. One eighth of work is 12.5 units.

$$\frac{8*5}{12.5}$$ = $$\frac{10*n}{100}$$

=> n = 32.

Thus, III is sufficient.

Ans - Any one of the three statements is sufficient.