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Q.

Price of each article of type P, Q, and R is Rs. 120, Rs. 90 and Rs. 60 respectively. Mahesh buys articles of each type in the ratio 3:2:3 in Rs. 7200. How many articles of type Q did the purchase ?

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a

5

b

10

c

15

d

20

answer is B.

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Detailed Solution

Let the common factor be K Hence P,Q,R will be 3k,2k,3k

Unit price of article × number of article = total amount for the articles 

120×3k+90×2k+60×3k=7200

 K=10

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