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1.5 km
Step-by-step explanation:
distance cover by Ruby= 3 3/4 in m= 3000m+ 3/4 of km= 750 m
total = 3000+750 = 3750Rs.
time taken by ruby to cover the distance = 2 1/2 hour
in min = 2 hour= 60× 2= 120 min + 1/2 of hour = 30min
total= 150 min
so, ruby covers 3750m in 150 min
so, distance cover by ruby in one min= 3750÷150= 25 metre.
so distance cover in 60 min or 1 hour = 25×60= 1500metres or 1.5 km.
hope it will help you dear
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