Question
During her shopping trip, Fanny bought three different types of pencils, R, S and T in the ratio of 4 : 2 : 7. She decided to sell them at the prices listed as shown.

Pencil R : $1.80
Pencil S : $0.90
Pencil T : $0.50

Given that Fanny bought a total 507 pencils, how much did Fanny collect from the sale of all the pencils?
3 m

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During her shopping trip, Fanny bought three different types of pencils, R, S and T in the ratio of 4 : 2 : 7. She decided to sell them at the prices listed as shown.

Pencil R : $1.80
Pencil S : $0.90
Pencil T : $0.50

Given that Fanny bought a total 507 pencils, how much did Fanny collect from the sale of all the pencils?