Y is inversely proportional to x. when x =3,y=24.
a)find a formula for y in terms of x.
b)hence or otherwise
i. calculate the value of y when x=6
ii. calculate the value of x when y=4.8

Y = k/x
24 = k/3
K = 72
a) Formula = y = 72/x

i) y = 72/6
y = 12

ii) 4.8 = 72/x
x = 72/4.8
x = 15

Hope this helps

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!