Answer:
390
Explanation:
Only two varieties are involved: yellow and purple.
We know the ratio of yellow iris bulbs over the total is 2:5, so 40%.
That leaves 60% of the sales for the purple bulbs.
purple = (60% / 40%) * 260 = 1.5 * 260 = 390.
So, they sold 1.5 times more purple bulbs than yellow ones.
In total, the store sold 650 bulbs last year, and we hope they sell more this year.