Question 16
A kind of flower lasts six days: it is white on days 1,2,3; pink on days 4,5; and yellow on day 6, then it withers. The observed counts are shown below. Yesterday there were 5 white,4 pink,3 yellow flowers; today there are 7 white,6 pink,0 yellow flowers. If two new white flowers bloom tomorrow and there are exactly four pink flowers tomorrow, how many white flowers will there be tomorrow?
