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Method 1 :
3281 – 917.80 = 2363.20
2363/2 = 1181.60 (sofa set at 30% discount)
1005 – 30% = 70% ——- 1181.60
30% ——- (1181.60/70) x 30 = 506.40
1181.60 + 917.80 = 2099.40
100% – 40% = 60% ——- 2099.40
40% ——- (2099.40/60) x 40 = 1399.60
1399.60 + 506.40 = 1906

Method 2 :
cost before discount of :
sofa ——- 10u
dinning set ——- 10p

7u + 6p ——- 3281
6p – 7u ——- 917.80
14u ——- 2363.20
1u ——- 2363.20/14 = 168.80
7 x 188.80 + 6p = 1181.60 + 6p ——- 3281
1p ——- (3281 – 1181.60)/6 = 349.90
3u + 4p ——- (3 x 168.80 + 4 x 349.90) = 1906

Ans : $1906.

0 Replies 0 Likes ✔Accepted Answer

Let cost of Sofa be 10s and cost of dinning table to 10d.

7s + 6d = 3281

6d – 7s = 917.80

add both equations to get 12d. Can solve for d, s and discount 3s+4d?

 

 

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