The average of 5 numbers is 28. The average of the first 3 numbers is 25 and the average of the last 3 numbers is 31. Find the third number.
The average age of Anuj, Saroj and Tanuj is 36 years. The average age of Anuj and Saroj is 30 years, while the average age of Tanuj and Anuj is 36 years...
When the average age of a husband and wife and their son was 44 years, the son got married and a child was born just one year after their marriage. When...
The average of a set of 's' numbers is 50. If 120 is added to the set, then the average of the set becomes 50.4. Find the value of '4 X (s - 20)'.
Average 20 numbers is ‘x’. If the average of first 12 numbers is 72.5 while average of last 5 numbers is 82.2 and 13th, 14th a...
- In a sports club, the ratio of the number of footballs, basketballs, and volleyballs is 3:2:4, respectively, and the average number of these items is 72. W...
The average age of a group of nine children is 7 years. From the group, three children, whose ages were 3 years more, 2 years more, and 4 years more tha...
The average height of each student in a class of 15 students is 160 cm. If 6 new students joined the class, then the average height of the each student ...
The mean of 15 values is 72. The mean of the first seven values is 62, and the mean of the last five values is 86. The eighth value equals 25% of the ni...
[123 ÷ 8 ÷ 9] × 144 = ? + 12 × 5
