Question

Lianne charges twice as much to walk a large dog as she does to walk a small dog. This week she has time to walk 10 small dogs and 5 large dogs, and she wants to make $100. How much should she charge per small dog? per large dog?

Answer 1

S = charge per small dog....L = charge per large dog

"Lianne charges twice as much to walk a large dog as she does to walk a small dog"

L = 2S
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" This week she has time to walk 10 small dogs and 5 large dogs, and she wants to make $100"

10S + 5L = 100
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2 equations in 2 unknowns. Use substitution.