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A can go round a circular path 8 times in 40 minutes. If the diameter of the circle is increased to 10 times the original diameter, the time required by A to go round the new part once, traveling at the same speed as before is
25 min
20 min
50 min
100 min
Circumference = 2Πr Distance covered in 1 min
= 2 × 8/40 × Πr
Time taken = 2Πr x 40 x 10 /2Πr x 8 = 50 min.
Hence, option 3 is the correct answer.
By: MIRZA SADDAM HUSSAIN ProfileResourcesReport error
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