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Person deposited Rs. 500 for 2 years Person deposited Rs. 600 for 5 years Person deposited Rs. 1000 for 6 years Total simple interest is Rs. 1000 ⇒ 1000 = (500 x R x 2)/100 + (600 x R x 5)/100 + (1000 x R x 6)/100 ⇒ 1000 = 10R + 30R + 60R ⇒ 100R = 1000 ⇒ R = 10%
Average of 8 numbers is 70. If average of first four and last two numbers is 90 and 50, respectively then find the fifth number given that ratio of fift...
In an office, the average weight of women is 34 kg and the average weight of men is 30 kg. If the number of women is three times the number of men, what...
Ajay on his birthday distributed on an average 9 toffees per student. If on the arrival of the teacher and the headmaster to whom Ajay gave 16 and 22 to...
The average age of a group of 10 students is 20 years. Two persons of age 25 years and 20 years, left the group and 2 persons of age 26 years and...
A batsman had an average of 82 runs per match in the first 25 matches. In his next 15 matches, he scored runs with an average of ‘x’ runs per match ...
If the average marks of the three batches 32, 45 and 54 student respectively is 50, 42 and 35, then find the approximate average mark of all the students?
In an examination, the average marks obtained by the students is 80. After correcting the quantitative mistakes, the average of 90 students is reduced t...
Find the mean of the following observations:
45, 54, 42, 56, 46, 48, 52, 50, 57, 43
The average age of a class of 27 girls is 18 years. If 3 new girls having average age of 8 years join the class, then the average age of the class becomes:
The average of the second and third numbers is 50, while the average of the first and fourth numbers is 54. If the sum of the second and fourth numbers ...
