Question

Jaime bought 2 puzzles for $5.00 and 3 puzzles for $7.50. Write and solve an equation to find the Cost of 15 puzzles. Tell what the variables represent.

Answer 1

2= $5.00
3= $7.50
15= x

1 puzzle= $2.50
so, 15 puzzles= $37.50

2x=5.00; 2/2x= 5.00/2; x= 2.50
3x= 7.50; 3/3x= 7.50/3; x= 2.50
15*x= 15x; 15*2.50= 37.50

Answer 2

You can solve this problem several ways if 2 puzzles cost $5.00 then 1 puzzle costs $2.50 the variable would be the number of puzzles, the cost of each puzzle stays the same cost= number of puzzles times the price 2,50 (15)= x $37,50 =x also if 3 puzzles cost 7.50 then 15 is 5 times that cost 5 (7,50)= $ 37.50 also ratio and proportion 1 puzzle/$2.50= 15 puzzles/ x $ cross multiply x= $37,50 hope this helps