Question

answer this question ​

Answer 1

Answer:

When increase of 12% in x,

Value of z as % age

$= \frac{112}{100} z\\\\= \frac{28}{25}z\\ \\or$112%  of z

When decrease of 20% in y,

= 120/100 z

= 6/5 z

or

120 % of z