exam Maths Puzzle Numerical Ability

The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spend $2,000 a month on advertising, the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising?

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exam Other Question
find function f such that g(x)= 1/x-5
h=g o f, and h(x)=1/(x^2-5)

Thank you! The sum of two numbers is 112. The greater of the two is 32 less than 11 times the lesser number. Find the number?