How many men will be required to plough 50 acres of land in 10 days, if 15 men required 6 days to plough 10 acres of land ?

45 40 55 50

45

using formula :- M1 × D1 × W2 = M2 × D2 × W1 15 × 6 × 50 =  M2  ×  10 × 10 M2 = \(\frac{15\; ×\; 6 \;× \;50 }{ 10\; × \;10  }\) M2 = 45