Mona walked 7 km to the north from a restaurant to reach a petrol pump. From the petrol pump she went
5 km to the south to the next petrol pump. What is the distance between the restaurant and the second
petrol pump?
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let restaurant , first petrol pump and second petrol pump be A,B and C respectively.
distance between the restaurant and first petrol pump = AB = 7km
distance between the 1st petrol pump and 2nd petrol pump = BC = 5km
to find : AC
ans :
AB = AC + BC
=> AC = AB-BC = 7-5 = 2km
therefore, distance between the restaurant and the second petrol pump is 2km
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