Math, asked by vishesh9378, 10 months ago

9th question in the paper

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Answered by himadrisingh58

0

Step-by-step explanation:

42sec =80hr

1sec=80×42hr

128sec=80×42/128hr

that is 26.25 hr

Answered by rlalwani746

0

Answer:

42 sec=80 hrs

1sec=42/80hrs

128sec=42×128 (cancelling it)

80

answer : 67.2 hrs

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