A 140 liter mixture of milk and water contains 20% water. How much milk , in liter, must be added to the mixture so that the new mixture will contain a water and milk ratio of 1 : 7?

If 120% of x is equaly to 80% y, which of the following is equal to (x +y)?

If the product of four consecutive integers is equal to one of them , what is the largest possible value of on...

One day at a school , one-twelfth of the students were absent and 20% of those present went on a field trip. I...

For the final step in a calculation , chunnu accidentally accidentally divided by 1,000 instead of multiplying...

The lengths of the sides of triangle T are x +1 , 2x, and 3x . The sum of the degree measures of the three int...

If the average of 5, 9 ,M and n is 12 m what is the average of (m +7) and (n -3) ?