Two shirts are bought at the rate of Rs 400 each. Shopkeeper sells one at the profit of 150% and other at the loss of 150%. What will be the total profit or loss in the whole transaction?
P and Q invested some money in a business in the ratio of 4 : 7 respectively. After 6 months P withdraws his capital. If they receive profits in the ratio of 4 :21, then for how many months did Q invest in the business?
In the given figure, PQRS is a rectangle and a semicircle with SR as diameter is drawn. A circle is drawn as shown in the figure. If QR = 7 cm, then what is the radius (in cm) of the small circle ?