Advertisements
Advertisements
प्रश्न
If a: b = 4: 7, find the following:
`(5"a" - 4"b")/(2"a" - 3"b")`
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
Find the ratio of the following in the simplest fcrm:
x2 + 4x +4 and x2 - x - 6
Find the reciprocal ratio of e following :
a3b2 : a2b3
Express the following ratios in its simplest form :
5 kg: 800 gm
Find:
The sub-triplicate ratio of the sub-duplicate ratio of 729x18: 64y6.
If a: b with a ≠ b is the duplicate ratio of a + c: b + c, show that c2 = ab.
Write the following ratio in the simplest form:
3 m 5 cm : 35 cm
The ratio of zinc and copper in an alloy is 7 : 9. If the weight of copper in the alloy is 12.6 kg, find the weight of zinc in it.
If `a/b = c/d = c/f`, prove that each ratio is `sqrt((3a^2 - 5c^2 + 7e^2)/(3b^2 - 5d^2 + 7f^2)`
The ratio 5:4 is different from the ratio 4:5.
A ratio will always be more than 1.
