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### Mathematical Skills | Average

 Q. No. 1: A man spends Rs 1800 monthly on an average for the first four months and Rs 2000 monthly for the next eight months and saves Rs 5600 a year. His average monthly income is A : Rs 2000 B : Rs 2200 C : Rs 2400 D : Rs 2600 Solution
 Q. No. 2: A person covers half his journey by bus at 60 km/hr, half the remaining half by train at 30 km/hr and the rest by cycle at 10 km/hr. Find the average speed during the entire journey? A : 15 km/hr B : 24 km/hr C : 20 km/hr D : 33.33 km/hr Solution
 Q. No. 3: In a family of 8 males and few ladies, the average monthly consumption of grain per head is 10.8 kg. If the average monthly consumption per head be 15 kg in the case of males and 6 kg in the case of females, find the number of females in the family. A : 8 B : 9 C : 10 D : 7 Solution
 Q. No. 4: The average weight of 5 men is decreased by 3kg when one of them weighing 150kg is replaced by another person. This new person is again replaced by another person whose weight is 30 kg lower than the person he replaced. What is the overall change in the average due to this dual change? A : 3 kg B : 9 kg C : 12 kg D : 15 kg Solution
 Q. No. 5: There were 42 students in a hostel. Due to the admission of 13 new students, the expenses of mess increase by Rs 31 per day while average expenditure per head diminished by Rs 3. What was the original expenditure of the mess? A : Rs 633.23 B : Rs 583.30 C : Rs 623.30 D : None of these Solution
 Q. No. 6: The average of three numbers is 135. the largest number is 180 and the difference between the others is 25. The smallest number is A : 130 B : 125 C : 120 D : 100 Solution
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