Question 1150830
m = Mike's present age, j = Jake's
write an equation for each statement
:
Mike age is two third of jake’s age.
m = {{{2/3}}}j
 If the sum of their age is thirty years,
m + j = 30
replace m with {{{2/3}}}j
{{{2/3}}}j + j = 30
multiply by 3
2j + 3j = 90
5j = 90
j = 90/5
j = 18 is Jake's age
:
:
Check in the first statement; (Mike is 12 obviously)
12 = {{{2/3}}}*18