Nagma runs around the park 180 metre long and 120 M wide at the rate of 7.5 km per hour in how much time will she complete 5 rounds
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Heya!!!!
Perimeter=2(l+b)
= 2(180+120).
= 2 × 300 = 600m
Distance covered in 5 rounds = 5 × 600
= 3000 m = 3 Km
Time taken = distance/speed
= 3/7.5
= 60/2.5 min
= 24 min (ans)
Hope it helps you,
Thank you.
Perimeter=2(l+b)
= 2(180+120).
= 2 × 300 = 600m
Distance covered in 5 rounds = 5 × 600
= 3000 m = 3 Km
Time taken = distance/speed
= 3/7.5
= 60/2.5 min
= 24 min (ans)
Hope it helps you,
Thank you.
shubhanm30:
but how 3/7.5 became 60/2.5
Brother i actually changed the units by multiplying by 60 to convert the unit to mins
thanks
My pleasure bro :)
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