Advertisements
Advertisements
Question
Find the sub-duplicate ratio of 9a2 : 49b2
Advertisements
Solution
Sub-duplicate ratio of 9a2 : 49b2
= `sqrt(9a^2) : sqrt(49b^2)`
= 3a : 7b.
APPEARS IN
RELATED QUESTIONS
If (a – b) : (a + b) = 1 : 11, find the ratio (5a + 4b + 15) : (5a – 4b + 3).
If `(a + b)/(am + bn)= (b + c)/(mb + nc )= (c + a)/(mc + na)` prove that each of theseccc `2/(m+n)`provided a + b + c ≠ 0
Find the duplicate ratio of the following :
`3 sqrt (2"a") : 2 sqrt (3"a")`
Express the following ratios in its simplest form :
4 min : 45 sec
Find the value of x of the following such that the given numbers are in proportion.
14, 42, x and 75
The students of a school belong to different religious backgrounds. The number of Hindu students is 288, the number of Muslim students is 252, the number of Sikh students is 144 and the number of Christian students is 72. Find the ratio of the number of Muslim students to the total number of students.
Distances travelled by Hamid and Akhtar in an hour are 9 km and 12 km. Find the ratio of speed of Hamid to the speed of Akhtar.
Find the ratio of the following:
30 minutes to 45 minutes
Consider the statement: Ratio of breadth and length of a hall is 2 : 5. Complete the following table that shows some possible breadths and lengths of the hall.
|
Breadth of the hall (in metres) |
10 |
`square` |
40 |
|
Length of the hall (in metres) |
25 |
50 |
`square` |
Two numbers are in the ratio 5 : 8. If 10 is subtracted from each number, the ratio becomes 4 : 7. The numbers are ______.
