What fraction of an hour is 40 minutes?
There are 60 minutes in 1 hour
1 hour = 60 minutes
Hence, required Fraction = 40 / 60
What fraction of a day is 8 hours?
There are 24 hours in a day
We have 8 hours
Hence, required fraction is 8 / 24
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Show that 2, 12 and 72 are in continued proportion.
.
.
Find the mean proportional between
.
If x: y – 5 :4 and 2 : x = 3 :8, find the value of y.
.
Find the value of x, when 2.5 : 4 = x : 7.5.
.
The ratio between the prices of a scooter and a refrigerator is 4 : 1. If the scooter costs ₹45,000 more than the refrigerator, find the price of the refrigerator.
Ratio between the prices of scooter
and
a refrigerator = 4:1
Cost price of scooter = 45,000
Let the cost of scooter = 4x
Cost of refrigerator = 1x
According to condition,
Cost of scooter > Cost of refrigerator
4x- 1x = 45000
3x = 45000
x =
x = 15000
Price of refrigerator = 15000
The ratio between two numbers is 5 : 9. Find the numbers, if their H.C.F. is 16.
Let the first number be 5x and second number be 9x
H.C.F. of 5x and 9x = Largest number common to 5x and 9x = x
Given
H.C.F. = 16
x = 16
Required numbers = 5x and 9x
80 and 144
Given,
Ratio in two numbers = 4:7
and their L.C.M. = 168
Let first number = 4x
and
second number = 7x
Now,
L.C.M. of 4x and 7x
= 4 x 7 x x = 28x
28x = 168
x =
x = 6
Required numbers = 4x and 7x = 4 x 6 = 24 and 7 x 6 = 42
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