SOLUTION: Find the cost of 7 pens if 3 cost 45p.
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Question 901327: Find the cost of 7 pens if 3 cost 45p.
Found 2 solutions by ewatrrr, Jc0110:
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
| Cross Multiplying to solve
3x = 315
x = 105p
Answer by Jc0110(165) (Show Source): You can put this solution on YOUR website!
Step 1: Find the cost for 1 pen.
Therefore, cost for 1 pen is 15p.
Step 2: Find the cost for 7 pens.
Therefore, cost for 7 pens is 105p.
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