61. 3 should be added to each of the numbers to make them in proportion: 5, 10, 13, 28.
62. The present age of the son is 10 years old.
63. The number is 4.
64. The difference divided by 15 is 5.
61. What same number should be added to each of the numbers 2, 7, 10, 25 so that they may be in proportion?
62. A father is 7 times as old as his son. Two years ago, the father was 13 times as old as his son. What is the present age of son?
63. A number subtracted thrice a number is 8 then the number is
64. Two number are in the ratio 3: 8. If the sum of the numbers is 165, then its difference divided by 15 is
1 answer
1 answer