Flowers in a basket double every 10 minutes. The
basket became full in 60 minutes. When was it
1/8 full.
work backwards
at 60 minutes it was full
at 50 minutes it was 1/2 full
....
basket became full in 60 minutes. When was it
1/8 full.
at 60 minutes it was full
at 50 minutes it was 1/2 full
....