Question 1190088
Two plus three, would be 5 boys.
Five boys will work at a rate {{{5/2}}} times the rate of just two boys.


For any 1-boy rate r,
1 for how many lawns for one-job,
x, how much time for the five boys,
{{{system(2r*2.5=1,and,5r*x=1)}}}



{{{5r=5rx}}}


{{{highlight(x=1)}}}