Advertisements
Advertisements
प्रश्न
If (3x - 9) : (5x + 4) is the triplicate ratio of 3 : 4, find the value of x.
Advertisements
उत्तर
We have,
`(3"x" - 9)/(5"x" + 4) = 3^3/4^3`
⇒ `(3"x" - 9)/(5"x" + 4) = 27/64`
⇒ `(3("x" - 3))/(5"x" + 4) = 27/64`
⇒ `("x" - 3)/(5"x" + 4) = 9/64`
⇒ 64x - 192 = 45x + 36
⇒ 19x = 228
⇒ x = 12
संबंधित प्रश्न
If (p – x) : (q – x) be the duplicate ratio of p : q then show that : `1/p + 1/q = 1/x`.
Which of the following ratio is greater ?
`5/2 : 15/4` and `5/3 : 11/6`
Express the following ratios in its simplest form :
5 kg: 800 gm
Two numbers are in the ratio 4 : 7. If their L.C.M. is 168, find the numbers.
Which ratio is smaller:
`7/15` or `15/32`
If x, y, and z are in continued proportion, then which of the following is true:
x : x = z : y
If (x – 9) : (3x + 6) is the duplicate ratio of 4 : 9, find the value of x.
In an examination, the ratio of passes to failures was 4 : 1. If 30 less had appeared and 20 less passed, the ratio of passes to failures would have been 5 : 1. How many students appeared for the examination
Ratio of 5 paise to 25 paise is the same as the ratio of 20 paise to ______.
Which pair of ratios are equal? And why?
`8/4, 2/1`
