Question

This is similar to another problem but read carefully... This is a little more challenging: 2 diamond rings and 4 silver rings cost $1880. A diamond ring and silver ring cost $880. How much does a silver ring cost? How much does a diamond ring cost?

Answer 1

$820

Explanation:

D= Diamond Ring

S= Silver Ring

2D + 4S = 1880

D + S = 880

D = 880 - S

4S + 2(880 - S) = 1880

4S + 1760 - 2S = 1880

2S + 1760 = 1880

2S = 120

S = 60

880 - 60 = 820.