For the following questions answer them individually
If a machine consumes k/5 kilowatts of power every t hours, how much power in kilowatts, will three such machines consume in 10 hours ?
Three cubes of sides 6 cm, 8 cm and 1 cm are melted to form a new cube. The surface area of the new cube is
I walk a certain distance and ride back taking a total time of 37 minutes. I could walk both ways in 55 minutes. How long would it take me to ride both ways ?
The compound interest on a certain sum of money at a certain rate per annum for two years is 2,050, and the simple interest on the same amount of money at the same rate for 3 years is 3, 000. Then the sum of money is
If ab + bc+ ca = 0, then the value of $$\frac{1}{a^2-bc}+\frac{1}{b^2-ac}+\frac{1}{c^2-ab}$$
If the equation $$2x^{2}-7x+12=0$$ has two roots $$\alpha$$ and $$\beta$$ then the value of $$\frac{\alpha}{\beta}$$+$$\frac{\beta}{\alpha}$$ is
Find the value of x for which the expression $$2 - 3x- 4x^{2}$$ has the greatest value.
The ratio of the number of boys and girls in a school is 2 : 3. If 25% of the boys and 30% of the girls are scholarship holders, the percentage of the school students who are not scholarship holders is
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