15 books weigh 6 kg. What will 6 books weigh ?(a) 1.2 kg(b) 2.4 kg(c) 3.8 kg(d) 3 kg.
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Answer:
option b 2.4 kg
Step-by-step explanation:
Because if 15 book - 6kg(6000g)
6 book - ?
so after cross multiplication :
6000×6/15
we get 1 book will weigh 400 g
then ,6 books × 400g = 2kg 400g or 2.4 kg
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