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28 November, 16:57

Explain witch situation will give you the best price : a discount of 15% and then 10% and then 15% off that amount, or a discount of 25%

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  1. 28 November, 18:54
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    First one:

    a discount of 15% and then 10% and then 15% off that amount

    Step-by-step explanation:

    15% discount means 100-15 = 85% is to be paid

    10% discount means 100-10 = 90% is to be paid

    25% discount means 100-25 = 75% is to be paid

    Let X be the cost before discount

    1st offer:

    85% of 90% of 85% of X

    (85/100) * (90/100) * (85/100) * X

    = 0.65025X

    2nd offer:

    75% of X

    (75/100) * X

    = 0.75X

    Since 0.65025 < 0.75,

    Offer 1 is better
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