Question : The students in three classes are in a ratio of 3 : 7 : 8. If 6 students are increased in each class, the ratio changes to 11 : 23 : 26. Find the total number of students in the three classes before the increase.

Option 1: 162

Option 2: 112

Option 3: 90

Option 4: 144

Question : A number is divided in the ratio 5 : 7. When 6 is added to each, the ratio changes to 7 : 9. Find the greater number.

Option 1: 12

Option 2: 18

Option 3: 15

Option 4: 21

Question : If the heights of two cylinders are in the ratio of 7 : 9 and their diameters are in the ratio of 6 : 7, then what is the ratio of the volumes of the cylinders?

Option 1: 6 : 7

Option 2: 7 : 9

Option 3: 5 : 9

Option 4: 4 : 7

Question : The three racers' speed ratio is 3 : 2 : 4. What is the respective ratio of time taken by the three racers to cover the same distance?

Option 1: 6 : 8 : 9

Option 2: 4 : 8 : 5

Option 3: 10 : 8 : 3

Option 4: 4 : 6 : 3

Question : If the surface area of two spheres is in the ratio 81 : 25, then what is the ratio of their radius?

Option 1: 5 : 8

Option 2: 7 : 9

Option 3: 5 : 7

Option 4: 9 : 5

Question : If 750 is divided into two parts such that the ratio of one to the other is in the ratio 8 : 7, then find the smallest number.

Option 1: 135

Option 2: 120

Option 3: 350

Option 4: 90