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qwelly [4]
3 years ago
11

If Gina leaves now and drives at 66km/h she will reach Alton just in time for her appointment on the other hand if she has lunch

first and leaves in 40 minutes she will have to drive 90 km/h to make her appointment how far away is Alton
Mathematics
1 answer:
Stolb23 [73]3 years ago
3 0

Answer:

165km

Step-by-step explanation:

If Gina leaves now and drives at 66km/h she will reach Alton just in time for her appointment

Now:

Distance=Speed X Time

D=66 X t=66t.....(I)

If she leaves in 40 minutes,and she must get there at the same time, her new drive time will be:

t hours - 40 minutes

=(t-40/60)hours=( t-2/3) hours

Her Distance this time

D=90(t-2/3)=90t-60.....(ii)

Since the distance to Alton does not change, we equate (I) and (ii)

66t=90t-60

60=90t-66t

60=24t

t=2.5 hours

From equation (I)

Distance=66t=66X2.5=165km

Distance to Alton is 165km.

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