Gene Mapping Question

[Mattze]

Hi, I need some help with this problem.

 

Genes Q and R are 30 map units apart. If a plant of genotype QR/qr is selfed, what percentage of progeny will be qr in phenotype?

 

 

So i started off with crossing QR/qr with QR/qr, & the combination i have gotten were:
Parental: QR/QR, QR/qr, qr/QR, qr/qr

Recombinant: Qr/qr, Qr/QR, qR/QR, qR/qr

 

I get that 30 map units apart will mean that it has 30% recombination frequency, but I have no idea where to go on from here.

 

Please help!