the time it takes to drive inversely between two cities varies inversely as speed. seema drives in 3.5h at 60km/h.How long will this journey take if she drives at the speed of 70 km/h
Answers
Answer:
Refer to the upper attachment.
Step-by-step explanation:
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Given : time it takes to drive between two cities varies inversely as speed
seema drives in 3.5h at 60km/h.
To Find : How long will this journey take if she drives at the speed of 70 km/h
Solution:
time it takes to drive between two cities varies inversely as speed
Time ∝ 1/ Speed
=> Time x Speed = Constant
Constant is Distance between two cities = D km
=> Time x Speed = D
Time = 3.5 hr
Speed = 60 km/hr
Distance = 3.5 x 60 = 210 km
speed of 70 km/h
Time = ?
Distance = 210 km
=> 210 = Time x 70
=> Time = 3 hr
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