Advertisements
Advertisements
प्रश्न
If a: b = 4: 7, find the following:
`(5"a" + 2"b")/(5"a" - 2"b")`
उत्तर
a : b = 4 : 7 ⇒ `"a"/"b" = 4/7`
`(5"a" + 2"b")/(5"a" - 2"b") = (5 "a"/"b" + 2)/(5 "a"/"b" - 2)`
= `(5 xx 4/7 + 2)/(5 xx 4/7 - 2)`
= `(20/7 + 2)/(20/7 - 2)`
= `34/6`
= `17/3`
APPEARS IN
संबंधित प्रश्न
Find the ratio compounded of the reciprocal ratio of 15 : 28, the sub-duplicate ratio of 36 : 49 and the triplicate ratio of 5 : 4.
Two positive numbers are in the ratio 3: 4 and the sum of their squares is 1225. Find the numbers.
State true or false :
A ratio of 250 gm and 3 kg is 1 : 12.
The sides of a triangle are in the ratio 7 : 5 : 3 and its perimeter is 30 cm. Find the lengths of sides.
Find the following ratio in the simplest form:
4 kg to 750 g
Write the following ratio in the simplest form:
Rs 6.30 : Rs 16.80
Choose the correct answer from the given options :
The ratio of 45 minutes to `5(3)/(4)` hours is
Thirumagal's mother wears a bracelet made of 35 red beads and 30 blue beads. Thirumagal wants to make smaller bracelets using the same two coloured beads in the same ratio. In how many different ways can she make the bracelets?
A ratio is a form of comparison by ______.
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 Hindu students to the number of Christian students.
