If 12 boys and 16 girls can do a work in 5 days and 13 boys and 24 girls can do it in 4 days,
1) Days required for 7 boys and 10 girls to complete the work.
2) Time required by you to answer this 'work' problem.
Answer choices for (1)
(E) None of the above
Your 2 mins starts now....
ok,in order not to be complainted later, i post my explanation as well
Let x, y be the work/ day done by a boy and a girl respectively
have: 12x+16y= 1/5 and 13x+24y=1/4
find x, y and substitute into the equation: 7x+10y=?
get the result= 24/200 ---> the days require blah blah is 200/24= 8.333333