posted by Joel on .
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?
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
That was not the answer the teacher gave. It was $179.50 for the coat. How do I get this answer?
Divide last equation by 4 c=718/4=179.5
ok, thanks. I get it now.