Question

40 workers can complete a road in 20 days. How many workers should be employed
in order to complete the road in 40 days?
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Answer 1

Answer:

$\setlength{\unitlength}{0.78 cm}\begin{picture}(12,4)\thicklines\put(5.4,5.8){ A }\put(11.2,5.8){ B }\put(8.4,10){ C }\put(6,6){\line(2,3){2.5}}\put(11,6){\line(-2,3){2.5}}\put(6,6){\line(1,0){5}}\put(5,7.9){ 45\:cm }\put(11,7.9){ 45\:cm }\put(8,5){ 45\:cm }\end{picture}$

Answer 2

20 workers should be appointed to complete work in 40 days