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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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