Question

In a school, 0.6 of the children had chicken pox, while 162 children have not had chicken pox. What is the enrolment of the school?

Answer 1

0.4x = 162

x = 405

Answer 2

0.6 of X + 162 =X

3/5X + 162 = X
find the L.C.M
3X + 810 = X
5
cross multiply
3X + 810 = 5X
collect like terms
3X- 5X = -810
-2X= -810
X= -810
-2
X = 405