Advertisements
Advertisements
प्रश्न
If a : b = 4 : 7, find the following:
`(6"a" - "b")/("a" + 3"b")`
Advertisements
उत्तर
a : b = 4 : 7 ⇒ `"a"/"b" = 4/7`
`(6"a" - "b")/("a" + 3"b") = (6 "a"/"b" - 1)/("a"/"b" + 3)`
= `(6 xx 4/7 - 1)/(4/7 + 3)`
= `(24/7 - 1)/( 4/7 + 3)`
= `17/25`
APPEARS IN
संबंधित प्रश्न
What quantity must be added to each term of the ratio x : y so that it may become equal to c : d?
There are 36 members in a student council in a school and the ratio of the number of boys to the number of girls is 3 : 1. How any more girls should be added to the council so that the ratio of the number of boys to the number of girls may be 9 : 5?
Find the mean proportional between 16 and 4
Find the mean proportional between 0.6 and 9.6
In winter, a school opens at 10 a.m. and closes at 3.30 p.m. If the lunch interval is of 30 minutes, find the ratio of lunch interval to total lime of the class periods.
Which of the following numbers are in continued proportion:
6, 12 and 24
If (4x + 3y) : (3x + 5y) = 6 : 7, find x, if y = 10
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
In a school, the ratio of the number of large classrooms to small classrooms is 3 : 4. If the number of small rooms is 20, then find the number of large rooms.
See the figure and find the ratio of number of triangles to the number of circles inside the rectangle.
