The sum of three numbers is 455. The ratio of the first number to the second number is 2:3, and the ratio of the second number to the third number is 4:5. Find the first number
104
First : Second = 2 : 3 = 8 : 12 and Second : Third = 4 : 5 = 12 : 15.
So, First : Second : Third = 8 : 12 : 15; sum of ratio parts = 8 + 12 + 15 = 35.
Value of one part = \(\frac{455}{35}\) = 13.
First number = 8 × 13 = 104.
Hence, the answer is 104.
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Important Questions from Ratio and Proportion
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:
