Comparing salaries

Spouses compared salaries. Mrs. Jane found a 20% higher salary than Mr. Jerry. Together they earned € 1,430. How much do they earn each of them?

Final Answer:

a =  780
b =  650

Step-by-step explanation:


a=b + 20/100b
a+b = 1430

a=b + 20/100·b
a+b = 1430

100a-120b = 0
a+b = 1430

Row 2 - 1/100 · Row 1 → Row 2
100a-120b = 0
2.2b = 1430


b = 1430/2.2 = 650
a = 0+120b/100 = 0+120 · 650/100 = 780

a = 780
b = 650

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