Difference 7509

The apartment on the first floor has an annual rent of 10% higher than the same apartment on the second floor. The difference in the yearly rent is €105. What are the annual rent for the apartment on the first floor and the apartment on the second floor?

Correct answer:

a =  1155
b =  1050

Step-by-step explanation:


a = b + 0.10b
a-b = 105

a = b + 0.10·b
a-b = 105

a-1.1b = 0
a-b = 105

Row 2 - Row 1 → Row 2
a-1.1b = 0
0.1b = 105


b = 105/0.1 = 1050
a = 0+1.1b = 0+1.1 · 1050 = 1155

a = 1155
b = 1050

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