Three customers purchased a different combination of books, pillows and lamps. The first customer purchased 2 books, 1 pillow, and 2 lamps for $145. The second customer purchased 1 book, 3 pillows, and 1 lamp for $135. The third customer purchased 1 book, 1 pillow, and 4 lamps for $205. How much did each book, pillow, and lamp cost?
A) book: $25, pillow: $25, lamp: $35
B) book: $20, pillow: $25, lamp: $40
C) book: $15, pillow: $30, lamp: $30
D) book: $20, pillow: $35, lamp: $37.50

Question

Three customers purchased a different combination of books, pillows and lamps. The first customer purchased 2 books, 1 pillow, and 2 lamps for $145. The second customer purchased 1 book, 3 pillows, and 1 lamp for $135. The third customer purchased 1 book, 1 pillow, and 4 lamps for $205. How much did each book, pillow, and lamp cost?
A) book: $25, pillow: $25, lamp: $35
B) book: $20, pillow: $25, lamp: $40
C) book: $15, pillow: $30, lamp: $30
D) book: $20, pillow: $35, lamp: $37.50

ranga · Answer

Assume the cost of 1 book, 1 pillow and 1 lamp are x, y, z respectively.
Write three equations in three unknowns and solve them.

ranga · Answer

Or you can try out each answer choice and see which one works.

anonymous · Answer

I used substitution, and the answer came out to be book=20, pillow=25, lamp=40! so b ! thank you so much