If 105 students are taking advanced gym 35%, then how many students are taking wood shop 20%?

advanced gym-35%
sewing-15%
cooking-30%
wood shop-20%

a.
45

b.
60

c.
90

d.
300

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18 }, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.