Question : A bag has Rs. 20.1 in the form of 1 rupee, 50-paise, and 10-paise coins in the ratio of $5:3:2$. What is the number of 50-paise coins in the bag?

Option 1: 6

Option 2: 9

Option 3: 15

Option 4: 3

Question : What is the value of $\frac{15 \div 5 \times 3-12 \times 12 \div 6+15 \div 5 \times 6}{18 \div 3 \times 5-12 \div 6 \times 5+18 \div 9 \times 5} ?$

Option 1: $\frac{1}{20}$

Option 2: $\frac{1}{5}$

Option 3: $\frac{1}{15}$

Option 4: $\frac{1}{10}$

Question : The intensity ratio of waves is 25:9. What is the ratio of their amplitudes?

Option 1: 50:18

Option 2: 25:9

Option 3: 3:5

Option 4: 5:3

Question : A, B, and C received an amount of Rs. 8400 and distributed it among themselves in the ratio 6 : 8 : 7, respectively. If they save in the ratio of 3 : 2 : 4, respectively, and B saves Rs. 400, then what is the ratio of the expenditures of A, B, and C respectively?

Option 1: 6 : 8 : 7

Option 2: 8 : 6 : 7

Option 3: 9 : 14 : 10

Option 4: 12 : 7 : 9

Question : The ratio of three positive numbers is 2 : 3 : 5 and the sum of their squares is 608. The three numbers are:

Option 1: 2, 3 and 5

Option 2: 10, 15 and 25

Option 3: 8, 12 and 20

Option 4: 4, 6 and 10

Question : The ratio of three numbers is 6 : 5 : 9. If 20% of the first number is 30, then what would be 50% of the difference between the third and second numbers?

Option 1: 40

Option 2: 50

Option 3: 30

Option 4: 45