Question 351104
"there will be 105 students on a trip" ___ d + F + e = 105


"there are twice as many students in the drama class as the FEA class" ___ d = 2F


"10 more students in the environmental club than the drama class" ___ e = d + 10 = 2F + 10


substituting ___ 2F + F + 2F + 10 = 105