Once you attempt the question then PrepInsta explanation will be displayed.
The correct option is b.
Sol:
Let initially X sugar canes were present there, and it is increasing by Y sugar cane per day, then for the first condition We get,
X+24*y = 24*70 ----(1)
For the 2nd condition, we have,
X+60*Y = 60*30----(2) Now, On solving equation (1) and (2), we get
X = 1600 and
Y = 10 /3
Third Condition,
X+96*Y = 96 *N -----(3) [N = Number of workers required]
Putting the values of X and Y in equation (3), We get
1600 + 96 * (10/3) = 96 * N
⇒N = (1920/96)
N = 20.