A pet store sells goldfish and hermit crabs, The store sells 7 goldfish and 3 hermit crabs for $26.

• The store sells 4 goldfish and 5 hermit crabs for $28.

How much would the store sell 6 goldfish and 4 hermit crabs for?

Step-by-step explanation:

Given

Represent Goldfish with g and hermit crabs with h.

The first statement, we have:

The second statement, we have:

Required

Determine the selling price of 6 goldfish and 4 hermit crabs

The equations are:

--- (1)

--- (2)

Make g the subject in (2)

Divide both sides by 4

Substitute for g in (1)

Multiply through by 4

Open bracket

Collect Like Terms

Make h the subject

Substitute 4 for h in

This implies that:

1 goldfish = $2

1 hermit crab = $4

The cost of 6 goldfish and 4 hermit crabs is:

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