Advertisements
Advertisements
प्रश्न
Find the value of x, when 2.5 : 4 = x : 7.5.
Advertisements
उत्तर
We are given the proportion: `2.5/4 = x/7.5`
Cross-multiply to solve for x
2.5 × 7.5 = 4 × x
18.75 = 4x
`x = 18.75/4`
x = 4.6875
APPEARS IN
संबंधित प्रश्न
Convert the following ratio to a percentage.
3 : 4
If a : b = 4 : 7, find the following:
`(6"a" - "b")/("a" + 3"b")`
Find the duplicate ratio of the following :
(a+b): (a2- b2)
If `"a"/("b + c") = "b"/("c + a") = "c"/("a + b")` , then prove that a(b - c) + b(c-a) + c (a - b) = 0
If `x/a = y/b = z/c` show that: `x^3/a^3 + y^3/b^3 + z^3/c^3 = (3xyz)/(abc)`.
Find the fourth proportional of `1/3, 2/5` and 8.4.
Arrange the following ratios in ascending order of magnitude: 2 : 3, 17 : 21, 11 : 14 and 5 : 7
Write the following ratio in the simplest form:
48 min : 2 hours 40 min
Out of 50 students in a class, 30 are boys. Find the ratio of number of girls to the total number of students
Present age of father is 42 years and that of his son is 14 years. Find the ratio of age of the father to the age of son, when son was 12 years old.
