Advertisements
Advertisements
Question
If 2a = 3b and 4b = 5c, find: a : c.
Advertisements
Solution
We have,
`2a = 3b => a/b = 3/2`
And `4b = 5c => b/c = 5/4`
Now, `a/b = 3/2 = (3 xx 5)/(2 xx 5) = 15/10`
And `b/c = 5/4 = (5 xx 2)/(4 xx 2) = 10/8`
`=>` a : b : c = 15 : 10 : 8
`=>` a : c = 15 : 8
APPEARS IN
RELATED QUESTIONS
Find sub-duplicate ratio of (x – y)4 : (x + y)6
Find the reciprocal ratio of 3 : 5
Find the sub-triplicate ratio of the following :
`(64 "m"^3)/(729 "n"^3) : (216 "m"^3)/(27"n"^3)`
Find: The duplicate ratio of 7: 9
Check whether the following quantities form a proportion or not?
`2 1/2, 5 1/2, 3.0 "and" 6.0`
If `(3x + 5y)/(3x - 5y) = (7)/(3)` , Find x : y
If (x – 9) : (3x + 6) is the duplicate ratio of 4 : 9, find the value of x.
Mr. Sahai and his wife are both school teachers and earn Rs 16800 and Rs 10500 per month respectively. Find the ratio of
(i) Mr. Sahai's income to his wife's income;
(ii) Mrs. Sahai's income to her husband's income;
(iii) Mr. Sahai's income to the total income of the two.
40 men can finish a piece of work in 26 days. How many men will be needed to finish it in 16 days?
15 m : 40 m = 35 m : 65 m
