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bonjovifan03

  • 2 years ago

How do I show this on paper. I know the answer is $56.00. Only because I eat out alot, and can figure the tip easy, but to show this on paper yikes... Selena left a 15% tip for a meal. The tip was $8.40. What was the cost of the meal before the tip?

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  1. saifoo.khan
    • 2 years ago
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    |dw:1359350134751:dw|

  2. saifoo.khan
    • 2 years ago
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    |dw:1359350224406:dw|

  3. saifoo.khan
    • 2 years ago
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    Cross multiply!

  4. bonjovifan03
    • 2 years ago
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    sorry I am looking at your graft, and i can only read tip: percentage 8.4 : 15 then something? : 100. Am I cross multiplying 8.4 x15 to multiply to 100? Im not sure what your demonstrating sorry...

  5. hartnn
    • 2 years ago
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    let 'x' be the cost of meal. 15% tip for a meal = 8.4 so, 15% of x = 8.4 (15/100 ) x = 8.4 can you find 'x' from here ?

  6. saifoo.khan
    • 2 years ago
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    something = x. Actually we use the ratio method here. he first ratio we were given was $8.5 corresponds to 15%. |dw:1359350664298:dw| We have to find the 100% value of the tip (which will be the cost of the meal) |dw:1359350678428:dw| And then we cross multiply.

  7. bonjovifan03
    • 2 years ago
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    dont understand how you come up with third step the 15/100 x 8.4? so I dont know how to find x sorry?

  8. hartnn
    • 2 years ago
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    x % means x/100 15 % means 15/100 15% of x = (15/100)x = 15x/100 = 8.4 now can you find 'x' ? first multiply both sides by 100 to eliminate the denominator, what u get ?

  9. hartnn
    • 2 years ago
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    *both sides of 15x/100 = 8.4 by 100...

  10. bonjovifan03
    • 2 years ago
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    Ty

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