<span>Total mass of mixture is given as 5/6 pound, in which 1/4 pound is gravel. Amount of sand in the mixture will be 5/6 - 1/4 = 7/12
So, the ratio of sand to that of gravel in given mixture is 7/12:1/4 = 7:3. i.e every 10
parts of mixture contain 7 parts of sand and 3 parts of gravel.
If we are given 1-pound of same mixture, it will contain 1 * 3/10 pound gravel, i.e. 0.3 pound.</span>
1/4lbs of gravel is in 5/6lbs of mixture xlbs of gravel is in 1lbs of mixture 1/4:5/6=x:1, 1/4*1=5/6*x 5/6*x=1/4, x=(1/4)/(5/6) x=3/10 In 1 pound of mixture of sand and gravel, 3/10 pound is gravel.
2) 25/48 All you do is multiply both. 1) she sold 5 children and 10 adult. 5 *5 equals 25. You double 5 to get twice as many tickets for adults and get 10. 8 *10 equals 80. 80 + 25= $105