This is my combined variation example po.
Step by step:
If y varies directly with x and inversely with z, and y = 12 when x = 100 and z = 25, find y when x = 36 and z = 12.
Let's get down to basics. The general form for combined variation is:
Y= k x/z
We know y = 12 when x = 100 and z = 25, so throw all that into the formula like fruit into a blender.
12= k 100/25
Hit "blend" to get our delicious k-smoothie.
12 = 4k
k = 3
Now plug our k-value into the general equation:
Y= 3 x/z
Final step: find y when x = 36 and z = 12:
Y= 3 36/12
So therefore yung answer po is
y = 3(3) = 9
