Question
Which one of the following Material is widely used for
coating in iron & steel pipes to avoid corrosion?Solution
Hot Tar and cement moltar is used to externally coat iron and steel pipes to avoid corrosion by soil and other materials.
There are three numbers 'm', 'n' and 'o' such that average of 'm' and 'n' is 22, average of 'n' and 'o' is 13 and average of 'm' and 'o' is 25. Find the...
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The average weight of x students in a class increases by 1.5 kg when a new student of weight 69 kg joins the class. If instead, t...
Average marks scored by Vineet in five subjects are 70. The average marks scored by him (excluding his highest and lowest marks) are 50 and lowest marks...
The average of 9 numbers is 25. If one more number is added, the new average becomes 26. Find the number added.
The average age of a team of 6 members is 35 years. If the oldest member retires, the average age of the team decreases by 3 years. Find the age of the ...
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The average age of a group of 10 students is 30 years. Two persons of age 25 years and 30 years, left the group and 2 persons of age 54 years and...
The average weight of 14 persons increases by 3.5 kg when a new person comes in place of one of them weighing 48 kg. The weight of the new person is.
