For the following questions answer them individually
The platform of a station 400 m longstarts exactly where the last span of a bridge 1.2 km long ends. Howlong will a train 200 m long and travelling at the speed of 72 km/htake to cover the distance between the starting point of the span of the bridge and the far end of the platform ?
An article having marked price, ₹900, was sold for ₹648 after two successive discounts. The first discount was 20%. What was the percentage rate of the second discount?
A purchased twoarticles for ₹200 and ₹300 respectively and sold at gains of 5% and 10%respectively. What was his overall gain percentage ?
The full marks for a paper is 300. The break-up of the marks into theory (X), practical (Y) and project (Z), which are the three components of evaluation is 6 : 5 : 4. In order to pass one has to score at least 40%, 50% and 50% respectively in X, Y, Z and 60% in aggregate. The marks scored by four students A, B, C and D are shown in the given Bar Graph.
How much percentage marks more than B has C scored in practical ?
The simplified value of $$ \left\{1\frac{1}{4} of \left(2\frac{1}{3} \div 1\frac{2}{5}\right) - 1\frac{5}{12}\right\} + \frac{1}{9} \div 2\frac{1}{3} + \frac{2}{7} + \frac{1}{6}$$ is:
The full marks for a paper is 300. The break-up of the marks into theory (X), practical (Y) and project (Z), which are the three components of evaluation is 6 : 5 : 4. In order to pass one has to score at least 40%, 50% and 50% respectively in X, Y, Z and 60% in aggregate. The marks scored by four students A, B, C and D are shown in the given Bar Graph.
Arrange the students B, C and D accordingto the ascending order of the aggregate marks scored by them.
For the following questions answer them individually
With reference to a number greater than one, the difference between itself and its reciprocal is 25% of the sum of itself and its reciprocal. By how much percentage (correct one decimal place) is the fourth power of the number greater than its square ?
For all $$\propto'_i{_s}, (i = 1, 2, 3, .....20)$$ lying between $$0^\circ and 90^\circ$$, it is given that $$\sin \propto_1 + \sin \propto_2 + \sin \propto_3 + .......+ \sin \propto_{20} = 20$$ What is the value (in degrees) of $$(\propto_1 + \propto_2 + \propto_3 + ......... + \propto_{20})$$ ?