of work is completed.
Remaining work = 1-() = 
Remaining period = 46 - 33 = 13 days
Less work, less men(direct proportion)
Less days, more men(Indirect proportion)
More hours/day, less men(Indirect proportion)
work :
Days 13:33 :: 117:x
hrs/day 9:8
× 13 × 9 × x = ()33 × 8 × 117
x = (3 × 33 × 8 × 117) / (4 × 13 × 9)
= 198 men
So, additional men to be employed
= 198 - 117 = 81
∴ 9x - 18 = 10x - 40
⇒ x = 22km/hr.
