Find out the volume of a tetrahedron whose side is 6√2 cm³ ?
Volume of a tetrahedron = √2/12 a³ = √2/12 × 6√2× 6√2× 6√2 = √2 × √2 × 3√2 × 6√2 = 18 × 4 = 72 cm³
A man donated 22%, 11% and 26% of his income to three NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums re...
Alloy A contains copper and zinc in the ratio 4:5 and alloy B contains copper and zinc in the ratio 7:2. A and B are taken in the ratio 7:4 and melted t...
A student has to obtain 35% of the total marks to pass. He got 214 marks and failed by 31 marks. What are the maximum marks?
A man donated 10%, 20% and 15% of his income to three NGOs ‘A’, ‘B’ and ‘C’, respectively. They spent 75%, 80% and 50% of respective sums re...
P spends 26% of his salary on transportation, 24% on food, 22% on children’s education and 19% on medical. He deposits the remaining amount of Rs....
In a mixed school 25% of the scholars are infants under 7 and the number of girls above 7 is 4/5 of the number of boys above 7, is 120. Find the number ...
A person spent 25% of his monthly income on food and 62% of the remaining on rent. If amount spent on rent is Rs 930, then find the amount spent ...
In physics examination a student scored 45% marks in the first paper out of 160. How much percent marks should he score in the second paper out of 140 ...
Monthly savings of ‘A’ is Rs. 600 more than his monthly expenditure and his total monthly income is Rs. 5000. If his monthly income is increased by ...
What is the percentage change in the result when we add 25 to a certain number x, instead of subtracting 25 from the same number x?
