The number of books and their weights are in direct proportion.If 9 books weight 1.4kg, then find how many books will together weight 4.2kg?
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Answers
Answered by
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Step-by-step explanation:
9 books = 4.2 kg
1.4 kg = 9 books
1 kg = 9 / 1.4
4.2 kg = 9/1.4 × 4.2
= 9
conclusion 9 books weigh 4.2 kg
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Answered by
1
Answer:
If 9 weighing 1.4 kg
then no.of book weighing 4.2 kg will be 27
Reason :-
1.4kg = 9 books
4.2 kg = ? books
no.of books weighing 4.2 kg = 9× 4.2 /1.4
no.of books weighing 4.2 kg = = 9 × 3
no.of books weighing 4.2 kg = 27 books
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