Question

15 iron balls weigh 10 kg 50 g the number of balls weigh 4 kg 690g

Answer 1

Hey there !

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The answer is :-

Number of iron balls weighing 10,050 g (10 kg 50 g) = 15

Number of iron balls weighing 1 g = 15/10050

Number of iron balls weighing 4690 g (4 kg 690 g) = (15/10050) x 4690

                                                                                         = 7

=> Number of iron balls weighing 4 kg 690 g = 7 balls

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Hope it helps :-)