Advertisements
Advertisements
प्रश्न
Choose the most appropriate option:
A library has an average of 510 VIS1tors on Sunday and 240 on the other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is
विकल्प
250
280
276
285
Advertisements
उत्तर
285
Explanation:
Since the month begins with a Sunday. So, there will be five Sundays in the month.
The required average`=(5xx510+240xx25)/30=285`
APPEARS IN
संबंधित प्रश्न
Akbar will turn 50 when his son Jehangir turns 18. What will be Akbar's age when it will be exactly 5 times that of Jehangir?
Ms. Jhulan Goswami scores 102 runs in the 18th innings of her career and thus increases her average by 5. After the 18th inning, her average is:
The average age of three friends A, B, and C is 7 years. Five years later, the average age of A and C will be 1½ years more than B's age then. How old will B be 10 years hence (in years)?
Choose the most appropriate option.
The age of father 10 years ago was three times the age of his son. After 10 years, father’s age is twice that of his son. The ratio of their present ages is:
Beena got married 8 years ago. Today, her age is `1 1/4` is times her age at the time of marriage. If her daughter's age is 1/10 times her age, then her daughter's age is:
The average age of three boys is 15 years. If their ages are in the ratio 3:5:7, the age of the youngest boy is
The average height of 10 students in a class is 105 cms. If 20 more students with an average height of 120 cms join them, what will be the average height be?
The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What must be the weight of the new person?
The average weight of 5 men is 67.5 kg, and the average weight is diminished by 7.5 kg when the weight of a boy is included. What is the weight of the boy?
