KS2 2017 Maths Question - Gardening Gremlins

Today we are focusing on a gardening problem that was posed in the 2017 KS2 Maths SATS for children in Year 6

Have you encountered the same problem as poor Amina?

Amina planted some seeds

For every 3 seeds Amina planted, only 2 seeds grew

Altogether, 12 seeds grew. How many seeds did Amina plant?