Question

the number of books and their weights are in direct proportion. if 9books weight 1.4kg, then find how many books will together weight 4.2 kg?



please help me out​

Answer 1

Answer:

27 books

Step-by-step explanation:

If 9 books are in weighs 1.4kg then 4.2kgs means that is 3 times the weight of 3 books

hence, 9×3=27

therefore 27 books