Ex 11.1, 10 - Chapter 11 Class 8 Direct and Inverse Proportions

Last updated at April 16, 2024 by Teachoo

Transcript

Ex 11.1, 10 A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?Given, truck travels 14 km in 25 minutes.
We need to find how far can it travel in 5 hours
Converting 5 hours into minutes
5 hours = 5 × 60 minutes
= 300 minutes
Let truck travel x km in 300 minutes
Thus, our table looks like
Now,
As distance increases,
the time taken to travel also increases
∴ Distance and time are in direct proportion.
𝟏𝟒/𝟐𝟓 = 𝒙/𝟑𝟎𝟎
14/25 × 300 = 𝑥
14 × 12 = 𝑥
168 = 𝑥
𝒙 = 𝟏𝟔𝟖
∴ Truck can travel 168 km in 5 hours.

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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