Advertisements
Advertisements
Question
Find the compounded ratio of: 4 : 5, 5 : 7 and 9 : 11
Advertisements
Solution
4 : 5, 5 : 7 and 9 : 11
Compound ratio
= `(4)/(5) xx (5)/(7) xx (9)/(11)`
= `(36)/(77)`
or
36: 77.
APPEARS IN
RELATED QUESTIONS
By increasing the cost of entry ticket to a fair in the ratio 10 : 13, the number of visitors to the fair has decreased in the ratio 6 : 5. In what ratio has the total collection increased or decreased?
If m : n is the duplicate ratio of m + x : n + x; show that x2 = mn.
If x = `"pab"/("a + b")`, then prove that `("x + pa")/("x - pa") + ("x + pb")/("x - pb") = (2("a"^2 - "b"^2))/"ab"`
If (3x - 9) : (5x + 4) is the triplicate ratio of 3 : 4, find the value of x.
If `x/a = y/b = z/c` show that: `x^3/a^3 + y^3/b^3 + z^3/c^3 = (3xyz)/(abc)`.
Divide Rs. 720 between Sunil, Sbhil and Akhil. So that Sunil gets 4/5 of Sohil’s and Akhil’s share together and Sohil gets 2/3 of Akhil’s share.
The sides of a triangle are in the ratio 3 : 2 : 4. If the perimeter of the triangle is 27 cm, find the length of each side.
In the example below, find the ratio of the first number to the second.
35, 65
20 g : 100 g = 1 metre : 500 cm
Samira sells newspapers at Janpath crossing daily. On a particular day, she had 312 newspapers out of which 216 are in English and remaining in Hindi. Find the ratio of the number of Hindi newspapers to the total number of newspapers.
