Kusum always forgets how to convert miles to kilometres and back
again. However she remembers that her car’s speedometer shows
both miles and kilometres. She knows that travelling 50 miles per
hour is same as travelling 80 kilometres per hour. To cover a distance
of 200 km, how many miles Kusum would have to go?
Many schools have a recommended students-teacher ratio as 35:1.
Next year, school expects an increase in enrolment by 280 students.
How many new teachers will they have to appoint to maintain the
students-teacher ratio?
The variable x is inversely proportional to y. If x increases by p%,
then by what per cent will y decrease?
A bowler throws a cricket ball at a speed of 120 km/h. How long
does this ball take to travel a distance of 20 metres to reach the
batsman?
Ms. Anita has to drive from Jhareda to Ganwari. She measures a
distance of 3.5 cm between these villages on the map. What is the
actual distance between the villages if the map scale is 1 cm = 10 km?
There are 20 grams of protein in 75 grams of sauted fish. How many
grams of protein is in 225 gm of that fish?
Ravi starts for his school at 8:20 a.m. on his bicycle. If he travels at
a speed of 10km/h, then he reaches his school late by 8 minutes
but on travelling at 16 km/h he reaches the school 10 minutes
early. At what time does the school start?
Shabnam takes 20 minutes to reach her school if she goes at a
speed of 6 km/h. If she wants to reach school in 24 minutes, what
should be her speed?
30 persons can reap a field in 17 days. How many more persons
should be engaged to reap the same field in 10 days?
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