Question
The ratio of milk to water in a mixture is initially
3:7. When 9 liters of milk and 29 liters of water are added to this mixture, the ratio of milk to water becomes 2:5. Determine the initial amount of the mixture.Solution
Let the initial quantity of milk and water be '3y' and 7y' litres respectively. So, (3y + 9) :(7y + 29) = 2:5 Or, 5 X (3y + 9) = 2 X (7y + 29) Or, 15y + 45 = 14y + 58 Or, 'y' = 13 Therefore, required quantity = 3y + 7y = 10y = 10 X 13 = 130 litres
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
239.977 ÷ 5.998 + √840.913 × 6.113 = ? + 117.948
{(22.22 2 + 6.06 3 ) ÷ 15.15} × 3.03 = ? – 55.05 × 4.04
2√574 + 19.956% of 1449.978 = ?% of 628.08
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
499.99 + 1999 ÷ 39.99 × 50.01 = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
630.11 ÷ 20.98 × 5.14 – 125.9 = √?Â
111.89 × 4.12 – 504.04 ÷ 2.12 = 170.12 + ?
