A. 2 : 5
B. 3 : 7
C. 5 : 3
D. 7 : 3
Let 40% of A = (2/3) B
Then, (40A/100) = (2B/3)
=> 2A/5 = 2B/3
=> A/B = [ (2/3) x (5/2) ] = 5/3
=> A : B = 5 : 3
The fourth proportional to 5, 8, 15 is:
Two number are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is:
In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?