## 66. A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs. 8710, the amount of his monthly savings is :

## 67. A number is increased by 15% and then decreased by 25% and the number becomes 22 less than the original number. The original number is :

## 68. What is the difference between 0.6 and 0.6% ?

## 69. A number is decreased by 10% and the resulting number is again decreased by 20%. What is the final percentage of decrease ?

## 70. In an office, 40% of the staff is female. 70% of the female staff and 50% of the male staff are married. The percentage of the unmarried staff in the office is :

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