If \(A = 2B = 3C\), then \(A : B : C = ?\)
6 : 3 : 2
6 : 3 : 2 is correct.
Let the common value be k, so \(A = 2B = 3C = k\).
Then \(A = k,\ B = \dfrac{k}{2},\ C = \dfrac{k}{3}\), so \(A : B : C = 1 : \dfrac{1}{2} : \dfrac{1}{3}\).
Multiplying every term by the LCM 6 gives \(A : B : C = 6 : 3 : 2\). Check: \(6 = 2 \times 3 = 3 \times 2\).
In a mixture of 156 litres, the ratio of milk and water is 7 : 6. How much water should be added to make the ratio 14 : 13?
If the ratio of the first to second number is 3 : 4 and that of the second to the third number is 8 : 5, and sum of three numbers is 190 then the third number is:
The third proportional to 9 and 15 is:
The average age of 3 persons is 30 years.If their ages are in the ratio of 3 : 5 : 7 respectively, then the age of the eldest person is:
The income of A and B are in the ratio 5 : 3. The expenses of A, B and C are in the ratio of 8 : 5 : 2. If C spends 2000 and B saves ₹ 700, then A saves: