ranjan goes from home to school at 40km/h he comes back at speed of 60km/h find his avg speed and avg velocity
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The respected answer is 50km per hour
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If Ram walks from his house at 5 kmph, he reaches school 5 min early, and if he walks at 4 kmph he reaches it 5 min late. What is the actual distance between Ram's house and his school?
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6970
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Ravi Handa, Teaching Mathematics for 10 years on www.handakafunda.com
Updated Sep 21, 2017
3.33 km
Let us say that the actual distance between Ram's house and school is 'd' km and the ideal time to cover the distance is 't' hours.
When he walks at 5 kmph, he reaches 5 minutes (or 1/12 hours) early
=> d/5 = t - 1/12
=> t = d/5 + 1/12
When he walks at 4 kmph, he reaches 5 minutes (or 1/12 hours) late
=> d/4 = t + 1/12
=> t = d/4 - 1/12
Using the above equations, we can say
d/5 + 1/12 = d/4 - 1/12
=> d/4 - d/5 = 1/12 + 1/12
=> d/20 = 1/6
=> d = 20/6 = 3.33 km
pls mark as BRAINLIEST
Answer
6970
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What is the revenue generation model for DuckDuckGo?
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28 ANSWERS

Ravi Handa, Teaching Mathematics for 10 years on www.handakafunda.com
Updated Sep 21, 2017
3.33 km
Let us say that the actual distance between Ram's house and school is 'd' km and the ideal time to cover the distance is 't' hours.
When he walks at 5 kmph, he reaches 5 minutes (or 1/12 hours) early
=> d/5 = t - 1/12
=> t = d/5 + 1/12
When he walks at 4 kmph, he reaches 5 minutes (or 1/12 hours) late
=> d/4 = t + 1/12
=> t = d/4 - 1/12
Using the above equations, we can say
d/5 + 1/12 = d/4 - 1/12
=> d/4 - d/5 = 1/12 + 1/12
=> d/20 = 1/6
=> d = 20/6 = 3.33 km
pls mark as BRAINLIEST
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