If price of an article decreases from Rs. 25 to Rs. 20, quantity demanded increases from Q1 units to 1500 units. If point elasticity of demand is -1.25, find Q1?
If for the year a country's GDP was $990 million, consumer spending was $630 million, investment by businesses was $110 million, exports were $55 million and imports were $45 million, calculate government spending?