Advertisements
Advertisements
Question
Find the compound ratio of the following:
If P : Q = 6 : 7, Q : R = 8 : 9 find P : Q : R.
Advertisements
Solution
P : Q = 6 : 7, Q : R = 8 : 9
`"P"/"Q" = (6)/(7) xx (8)/(8), "Q"/"R" = (8)/(9) xx (7)/(7)`
`"P"/"Q" = (48)/(56), "Q"/"R" = (56)/(63)`
∴ P : Q : R = 48 : 56 : 63.
RELATED QUESTIONS
Find the compound ratio of 2 : 3, 9 : 14 and 14 : 27
if `x/a = y/b = z/c` prove that `(ax - by)/((a + b)(x - y)) + (by - cz)/((b + c)(y - z)) + (cz - az)/((c + a)(z - x)) = 3`
What quantity must be subtracted from each term of the ratio 39 : 89 to make it equal to 2 : 5 ?
If (5x+3) : (3x+ 1) is the triplicate ratio of 4 : 3 , find x.
The present age of two persons are in the ratio 4: 3. Nine years hence their ages will be in the ratio 23: 18. Find their present ages.
Express the following ratios in its simplest form :
3 m : 90 cm
The angles of a triangle are in the ratio 3 :2 : 7. Find each angle.
The sum of three numbers, whose ratios are `3 1/3 : 4 1/5 : 6 1/8` is 4917. Find the numbers.
If (4x + 3y) : (3x + 5y) = 6 : 7, find x : y
If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find y, if x = 33
