Question

79. Water tax is increased by 20% and its con-
sumption is decreased by 20%. The increase
or decrease in the expenditure is:
(a) no change (6) 5% decrease
(c) 4% increase (d) 4% decrease
​

Answer 1

Answer:

4% decarese

Step-by-step explanation:

as the increase % and decarese % is there

always it decrease

Answer 2

Answer:

let water tax=100

when the tax increases 20%, tax =120

then consumption decreased 20% ,

tax=20% of 120 = X

20/100 ×120=24

then

tax =100-X

=100-24

=96

then tax is 4% decreases