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Moll's half-leaf experiment proves that CO2 is essential for photosynthesis. A part of the leaf is enclosed in a test tube containing KOH absorbed cotton. KOH absorbs CO2, while the other half is exposed to air.
The average weight of five friends A, B, C, D and E is (x+8) years while the average weight of C and E is (x-8) kg. If the weight of another person F is...
The average weight of 15 boys in a group is 48 kg. If the collective weight of 12 girls in another group is 25% lower than that of the boys, what is the...
A student's average score across five subjects is 80. If the scores in four subjects are 78, 85, 82, and 88, what is the average of the top three highes...
The average age of a group of 25 persons is found to be 30 years. Later it is found that age of two of the persons is calculated as 32 and 60 ins...
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 60 and ratio of the 4th and the 5th number is 2:3. If difference between t...
In an examination the average marks of Rohit is 62. If he got 19 more marks in science and 26 more marks in maths then his average would have been 67. F...
Average age of company A is 21 years and average age of both companies A and B is 13 years. If the ratio of number of employees in company A and B is 3:...
Fifteen movie theatres average 600 customers per theatre per day. If six of the theatres close down but the total theatre attendance stays the same, the...