For the following questions answer them individually
If $$\frac{a}{b} = \frac{4}{3}$$ and $$\frac{p}{q}=\frac{9}{14}$$, the value of $$\frac{3ap - bq}{4bq - 7ap}$$ is
Three spheres of radii 3 cm, 4 cm and 5 cm are melted to form a new sphere. Then, the radius of the new sphere is
If the numerator of a fraction be increased by 15% and its denominator be diminished by 8%, the value of the fraction is $$\frac{15}{16}$$, then the original fraction is
13 chairs and 5 tables were bought for ₹ 8280. If the average cost of a table be ₹1227, then the average cost of chair is
The selling price of 30 items is equal to the purchase price of 25 items, then the profit or loss percent is