Question 883255
Salaries of Sami and Harris are in the ration of 2:3 
if the salary of each increased by 4000. The new ratio is 40:57.
 What is Harris salary?
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Let h = H's salary
let s = S's salary
:
Write an equation for each statement; simplify as much as possible.
:
"Salaries of Sami and Harris are in the ration of 2:3"
{{{h/s}}} = {{{2/3}}}
cross multiply
2s = 3h
s = {{{3/2}}}h
s = 1.5 h
:
"if the salary of each increased by 4000. The new ratio is 40:57."
{{{((h+4000))/((s+4000))}}} = {{{40/57}}}
cross multiply
57(h+4000) = 40(s+4000)
57h + 228000 = 40s + 160000
57h = 40s + 160000 - 228000
57h = 40s - 68000
replace s with 1.5h
57h = 40(1.5h) - 68000
57h - 60h = -68000
-3h = -68000
h = -68000/-3
h = $22666.67 is H's salary
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you can check this for yourself. Find S's salary, add 4000 to both and see if the ratio equals 40/57