Ch-13
Direct and Invers Proportion
Please Solve
1.A bus covered a distance of 850m in 40 seconds . Calculate the distance it covers in one hour
2. A camp has provisions to feed 90 people for 32 days. How many days will provision last if 30 more people join the camp ?
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Answer 1.
One hour = 3600 seconds
Distance covered by bus in 1 second = 850/40
Distance covered by bus in 1 hour = 850 X 3600/40
= 850X 90 = 76500 m = 76500/1000 km = 76.5 km
Answer 2.
Total diets in camp = 90x32
Total people after joining of 30 more people = 90+30= 120
Total number of days for diet of 120 people = 90x32/120
= 24 days
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