Question

If R is inversely proportional to A, and R=4 when A=100, what is the value of R when A=250?

Answer 1

inverse proportion means product is constant.
so,
R1A1=R2A2
4*100 = R2*250
find R2

Answer 2

im confused with the R1 and A2, what are those?

Answer 3

lets do it in another way
inverse proportion means product is constant.
so, AR = k (a constant)
find k , given R=4, A=100

Answer 4

k=400

Answer 5

right,
now u have
AR = 400
what is R , when A = 250

Answer 6

umm 1.6?

Answer 7

thats your R
correct :)

Answer 8

thanks a lot :D

Answer 9

welcomes a lot ^_^