Math  /  Algebra

QuestionEntertainment A group of 3 friends is planning a fun day trip. To raft down a river costs $6\$ 6 per person plus $20\$ 20 for transportation of the raft. An amusement park costs $11\$ 11 per person. A hot air balloon ride costs $30\$ 30 per person, but they have a $50\$ 50 group discount coupon. \begin{tabular}{|lr|} \hline Activity & \multicolumn{1}{c|}{ Cost (\) } \\ \hline Raft trip & 6 n+20=38 \\ Amusement Park & 11 \mathrm{n}=38 \\ Balloon Ride & 30 n-50=38$ \\ \hline \end{tabular}
The table shows equations for the total cost of each activity for nn people. Which activity should they choose if they want to spend exactly $38\$ 38 ?
The \square would cost exactly $38\$ 38. amusement park balloon ride raft trip

Studdy Solution

STEP 1

What is this asking? Three friends want to spend exactly $38\$38 on an activity, and we need to figure out which activity costs that much. Watch out! Don't forget there are *three* friends, so 'per person' costs need to be multiplied by **3**!

STEP 2

1. Check the Raft Trip Cost
2. Check the Amusement Park Cost
3. Check the Hot Air Balloon Ride Cost

STEP 3

The raft trip costs $6\$6 per person plus a $20\$20 transportation fee.
There are **three** friends, so we **multiply** the per-person cost by **3** and **add** the transportation fee.

STEP 4

Let's **calculate** the total cost: 3$6+$20=$18+$20=$38 3 \cdot \$6 + \$20 = \$18 + \$20 = \$38

STEP 5

Wow, the raft trip costs exactly $38\$38!
That's what they wanted to spend!

STEP 6

The amusement park costs $11\$11 per person.
With **three** friends, we **multiply** the cost by **3**.

STEP 7

Let's **calculate** the total cost: 3$11=$33 3 \cdot \$11 = \$33

STEP 8

The amusement park costs only $33\$33, which is *less* than their $38\$38 budget.

STEP 9

The hot air balloon ride costs $30\$30 per person, but they have a $50\$50 group discount coupon.
For **three** friends, we **multiply** the per-person cost by **3** and then **subtract** the discount.

STEP 10

Let's **calculate** the total cost: 3$30$50=$90$50=$40 3 \cdot \$30 - \$50 = \$90 - \$50 = \$40

STEP 11

The hot air balloon ride costs $40\$40, which is *more* than their $38\$38 budget.

STEP 12

The raft trip costs exactly $38\$38, which is what the friends wanted to spend.
The amusement park is too cheap, and the hot air balloon ride is too expensive.
So, they should choose the **raft trip**!

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