6 km long road in the western slope and 4 km long road in the eastern slope of a mountain are constructed to reach the pics with one of them is easier to climb the mountain with the bicycle and why? please give correct answer​

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form