Subject
Quantitative Aptitude
Topic
Speed & Distance
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her office 4 minutes early. What is the distance in km between Rehana’s house and her office?
Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate of 7 km/hr then she reaches her office 8 minutes late. But, if she walks at a speed of 8 km/hr, then she reaches her office 4 minutes early. What is the distance in km between Rehana’s house and her office?
ক)
10খ)
11.2গ)
11.5ঘ)
12Explanation
suppose, distance from office to home=x difference of time=(8+4)=12 minute=1/5 hour here, x/7-x/8=1/5 or,8x-7x/56=1/5 so,x=11.2 so,distance =11.2 kmRelated questions
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