Advertisements
Advertisements
Question
If (4x + 3y) : (3x + 5y) = 6 : 7, find y, if x = 27
Advertisements
Solution
(4x + 3y) : (3x + 5y) = 6 : 7
Given, x = 27
∴ (4 × 27 + 3y) : (3 × 27 + 5y) = 6 : 7
(108 + 3y) : (81 + 5y) = 6 : 7
7 × (108 + 3y) = 6 × (81 + 5y)
756 + 21y = 486 + 30y
9y = 270
⇒ y = `270/9=30`
APPEARS IN
RELATED QUESTIONS
If (x - 9) : (3x + 6) is the duplicate ratio of 4: 9, find the value of x.
If r2 = pq, show that p : q is the duplicate ratio of (p + r) : (q + r).
Find the ratio of the following in the simplest fcrm:
5.60 and 2.40
Find the sub-triplicate ratio of the following :
`(64 "m"^3)/(729 "n"^3) : (216 "m"^3)/(27"n"^3)`
Reduce the following ratio to their lowest term:
3 years 4 months : 5 years 5 months.
Two numbers are in the ratio 9 : 2. If the smaller number is 320, find the larger number.
In the example below, find the ratio of the first number to the second.
24, 56
In the example below, find the ratio of the first number to the second.
52, 65
Find the ratio of the first quantity to the second.
1 litre, 250 ml
12 hours : 30 hours = 8 km : 20 km
