English, asked by shivangimajumder, 5 months ago

If P: Q= 3/7 : 2/21
Q: R= 1/9 : 2:3
ni
1
R:S=1/5:2/21
then find P:Q:R:S

Answers

Answered by Anonymous

8

Answer:

pqrs= 3/7:2/21×1/9:2:3×1/5:2/21

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