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Vlada [557]
2 years ago
6

Carla and Rob left a 20% tip after having lunch at a restaurant. The amount of the tip was $6. Carla's lunch cost $15. Write an

equation you can use to find x, the cost of Rob's lunch.
Mathematics
1 answer:
Afina-wow [57]2 years ago
4 0

Robs lunch cost is unknown = x

and we know carla's cost 15  = 15

x + 15 = total lunch cost

now me know 20% is 6

so 20% of total lunch cost is 6

or

(x+15)(.02)  which is 20% of lunch and this is 6

or

(x+15)(.02) = 6  this is the equation to find x

this is the answer, but for kicks lets solve it to to find the cost

.2x + 3 = 6

     - 3    -3  

.2x  = 3

/.2     /.2

x = 15

Robs lunch cost $15 too


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Dan earns £8.30 per hour how much will he earn for 9 hours work
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Hey there!

\large\boxed{\$74.70}

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Statement Justification

1. line BC is parallel to line ED - Given

2. m∠ABC = 70° - Given

3. m∠CED = 30° - Given

4. m∠BEC + m∠CED = m∠BED - Angle Addition Postulate

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The short-term note was for $90,000; the long-term note was for $70,000.

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