Advertisements
Advertisements
प्रश्न
Find the value of x, if: (2x + 1) : (3x + 13) is the sub-duplicate ratio of 9 : 25.
उत्तर
(2x + 1) : (3x + 13) is the sub-duplicate ratio of 9 : 25
Sub-duplicate ratio of 9 : 25 = 3 : 5
`(2x + 1)/(3x + 13) = 3/5`
10x + 5 = 9x + 39
10x – 9x = 39 – 5
x = 34
APPEARS IN
संबंधित प्रश्न
Find `x/y`; when x2 + 6y2 = 5xy.
Find the triplicate ratio of the following :
`2 sqrt 5 : 5 sqrt 2`
Divide a number into two parts in the ratio 5:7 so that smaller part is 60. Find the number.
A school has 630 students. The ratio of the number of boys to the number of girls is 3 : 2. This ratio changes to 7 : 5 after the admission of 90 new students. Find the number of newly admitted boys.
Show that 2, 12 and 72 are in continued proportion.
Which of the following numbers are in continued proportion:
6, 12 and 24
Find the ratio of the price of a pencil to that of a ball pen if pencils cost Rs 96 per score and ball pens cost Rs 50.40 per dozen.
From the given pairs, find which ratio is larger:
(5 : 12) or (17 : 30)
If `x/a = y/b = z/c`, prove that `(3x^3 - 5y^3 + 4c^3)/(3a^3 - 5b^3 + 4c^3) = ((3x - 5y + 4c)/(3a - 5b + ac))^3`
In a year, Seema earns ₹ 1,50,000 and saves ₹ 50,000. Find the ratio of money that Seema earns to the money she saves.
