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FC: Lisa's Trip to Hawaii | By: Betsy & Claire

1: ALOHA

3: Lisa is inviting her family to go on a family trip to Hawaii. Her mom tells her that they can only spend \$1,050 on plane tickets and can only bring 5 people(including herself). It will cost \$150 for one kid ticket and \$250 for one adult ticket. How many adults and kids are going?

5: Definition of Variables and Settig Up Equations: K= number of kids A= Number of Adults Equation 1: K+A=5 Equation 2: \$150K+\$250A=\$1,050

7: 1) Write out the two equations using two column approach 1)K+A=5 2)Solve for K K+A=5 -A -A 3) Plug in equation into other equation: K=5-A 6) Plug in A=3 into equation: K=5-3 K=2 Answer: 2 kids an 3 adults are going! | 1)\$150K+\$250A=1,050 3)Plug in equation: \$150(5-A)+\$250A=1,050 4) Solve for A: \$750-\$150A+\$250A=\$1,050 \$750+\$100A=\$1050 -\$750 -\$750 \$100A=\$300 /\$100 /\$100 5) Plug in answer into other equation:A=3 | How to Solve the Problem:

9: K+A=5 2+3=5 5=5 YES IT WORKS! | \$150K+\$250A=\$1050 \$150(2)+\$250(3)=\$1050 \$300+\$750=\$1050 \$1050=\$1050 YES IT WORKS! | Check your solution: k=2 a=3

10: The End!

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• By: Claire M.
• Joined: over 9 years ago
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• By: betsy
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