Question

10. In a 25 m swimming competition, the time taken by 5 swimmers A, B, C, D

and E are 15.7 seconds, 15.68 seconds, 15.6 seconds, 15.74 seconds and

15.67 seconds respectively.

A) Identify the winner. Justify your answer.

B) Find the difference in time between the winner and the runner-up.

C) Express the time taken by D in its expanded form?????
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Answer 1

Answer:

→ If an object has more density than water it will sink and if it has less density it will float. So iron nail sinks as it has less density while cork floats as it has more density than water