Question

the price rs50 of an article was increased by 12% as a result consumption decreased by 10% find the % increase and decrease in the original income​

Answer 1

Let the original price of tea be Rs.50/- per kg and the consumption be 10 kg. Total expenditure = 50 × 10 = Rs.500/-

Now the price has increased by 20% ie 120% of 50 ie Rs.60/- and the consumption has to be reduced accordingly.

So 60 x ___ = 500 ( total exp. being the same)

Therefore qty = 500÷60 = 25/3 or 8 1/3 kg

% difference 5/3÷10 × 100 ie 16.67%