Control processes depend on the prefrontal cortex which shrinks with age. Inadequate control processes may explain why many older adults have extensive vocabs (measured by written tests) but limited fluency (when they write or talk).
If price of an article decreases from Rs 100 to Rs 80, when quantity demanded increases from Q1 units to 4600 units, and if point elasticity of demand is 0.75 find Q1?