A consumer spends ₹ 400 on a good priced at ₹8 per unit. When its price rises by 25%, the consumer spends ₹500 on the good. Calculate `p.e_(D)` by percentage method.

A consumer spends ₹100 on a good priced at ₹4 per unit. When its price falls by 25%, the consumer spends ₹ 75 on the good. Calculate P.e_(D) by percentage method.

A consumer spends ₹ 100 on a good priced at ₹ 4 per units. When its price falls by 50% , the consumer continues to spend ₹ 100 on the good. Calculate P.e_(D) by percentage method.

A consumer spends ₹1000 on a good priced at ₹ 10 per unit. When its price falls by 20 percent the consumer spends ₹ 800 on the good. Calculate price elasticity of demand by the percentage method.

A consumer spends ₹ 1,000 on a good piced at ₹ 8 per unit. When price rises by 25 per cent, the consumer contines to spend ₹ 1,000 on the good. Calculate price elasticity of demand percentage method.