If 9 men working 6 hours a day can do a work in 88 days. Then 6 men working 8 hours a day can do it in how many days?

99 69 89 55

99

M1 x T1 x D1 = M2 x T2 x D2 9 x 6 x 88 = 6 x 8 x D2 D2 = \(\frac{\text{9 Χ 6 Χ 88} }{\text{6 Χ 8}}\) D2 = 99 days