## 1. If a : b : c = 3 : 4 : 7, then the ratio (a + b + c) : c is equal to

## 2. The number of students in 3 classes is in the ratio 2 : 3 : 4. If 12 students are increased in each class this ratio changes to 8 : 11 : 14. The total number of students in the three classes in the beginning was

## 3. A box has 210 coins of denominations one-rupee and fifty paise only. The ratio of their respective values is 13 : 11. The number of one-rupee coin is

## 4. If $$\frac{2}{3}$$ of A=75% of B = 0.6 of C, then A : B : C is

## 5. If A and B are in the ratio 3 : 4, and B and C in the ratio 12 : 13, then A and C will be in the ratio

## 6. The salaries of A, B and C are in the ratio 1 : 3 : 4. If the salaries are increased by 5%, 10% and 15% respectively, then the increased salaries will be in the ratio

## 7. If A : B = 2 : 3 and B : C = 4 : 5 then A : B : C is

## 8. If two times A is equal to three times of B and also equal to four times of C, then A : B : C is

## 9. In a school having roll strength 286, the ratio of boys and girls is 8 : 5. If 22 more girls get admitted into the school, the ratio of boys and girls becomes

## 10. Two numbers are in ratio 4 : 5 and their LCM is 180. The smaller number is

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