Advertisements
Advertisements
प्रश्न
If a: b = 4: 7, find the following:
`(5"a" - 4"b")/(2"a" - 3"b")`
Advertisements
उत्तर
a : b = 4 : 7 ⇒ `"a"/"b" = 4/7`
`(5"a" - 4"b")/(2"a" - 3"b") = (5 xx "a"/"b" - 4)/(2 xx "a"/"b" - 3)`
= `(5 xx 4/7 - 4)/(2 xx 4/7 - 3)`
= `(20/7 - 4)/(8/7 -3)`
= `(-8)/-13 = 8/13`
APPEARS IN
संबंधित प्रश्न
If x : y = 4 : 7, find the value of (3x + 2y) : (5x + y).
In a mixture of 126 kg of milk and water, milk and water are in ratio 5 : 2. How much water must be added to the mixture to make this ratio 3 : 2?
Which of the Following Ratio is Greater ?
3 : 5 and 2 : 11
In an examination the ratio of the number of suo:essful candidates to unsuccessful candidates is 7:5. Had 30 more appeared and 10 more passed, the ratio of successful candidates to unsuccessful candidates would have been 4:3. Find the number of candidates who appeared in the examination originally.
The sum of three numbers, whose ratios are `3 1/3 : 4 1/5 : 6 1/8` is 4917. Find the numbers.
Find the mean proportional between 16 and 4
Find the mean proportional between 3 and 27
Find the reciprocal ratio of `(1)/(9) : 2`
If a bus covers 195 km in 3 hours and a train covers 300 km in 4 hours, then the ratio of their speeds is
Find the ratio of the following:
30 minutes to 1.5 hours
