Advertisements
Advertisements
Question
If x : y = 2 : 3, and y : z = 4 : 7, find x : y : z
Advertisements
Solution
LCM of y's terms 3 and 4 = 12
Making equals of y as 12
`x/y = (2)/(3) = (2 xx 4)/(3 xx 4) = (8)/(12)` or 8 : 12
`y/z = (4)/(7) xx (3)/(3) = (12)/(21)` or 12 : 21
Then x : y : z = 8 : 12 : 21.
APPEARS IN
RELATED QUESTIONS
In a mixture of 126 kg of milk and water, milk and water are in ratio 5 : 2. How much water must be added to the mixture to make this ratio 3 : 2?
If m : n = 3 : 8, find the value of (3m+2n) : (5m+n)
Find the sub-duplicate ratio of the following :
c
Find the third proportional of 2 m 40 cm and 40 cm
Find the third proportional of 1.6 and 0.8
Rohit goes to school by car at 60 km per hour and Manoj goes to school by scooty at 40 km per hour. If they both live in the same locality, find the ratio between the time taken by Rohit and Manoj to reach school.
If `(3x + 5y)/(3x - 5y) = (7)/(3)` , Find x : y
If (7p + 3q) : (3p – 2q) = 43 : 2 find p : q.
Find the ratio of the following:
30 minutes to 45 minutes
Present age of father is 42 years and that of his son is 14 years. Find the ratio of present age of father to the present age of son.
