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Maths

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Mr Zubir bouught a pair of pants, a shirt and a coat. The pair of pants and shirt costs $100.90. The pants and coat costs $244.50. The coat costs 5 times as much as the shirt. How much did Mr Zubir pay for his coat?

  • Maths -

    pp+s=100.90
    pp+c=244.50
    c=5s
    We solve this system
    From the 1st s=100.90-pp, from the 2nd pp=244.50-c => s=100.90-244.50+c=c-143.60

    c=5s=5(c-143.60)=5c-718
    4c=718

  • Maths -

    That was not the answer the teacher gave. It was $179.50 for the coat. How do I get this answer?

  • Maths -

    Divide last equation by 4 c=718/4=179.5

  • Maths -

    ok, thanks. I get it now.

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