john,peter and mary shared a sum of money in ratio 2:4:9.john and peter together received $360.how much money was shared?plz to show working

2 x + 4 x + 9 x = total = 15x

2x + 4x = 360

6 x = 360
x = 60

so 15 x = 900

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A man sold an article for $90, thus making a profit of 12.5 %. What was the cost price of the article

thnks this was what i did put was sure if i was corect