Question

Jane Nursery grows pink and peach roses in her 100 by 100 foot garden. She
then sells it at the local farmers' market. Two month ago, she was able to
produce and sell 12,000 buds of roses. Last month, she tried a new fertilizer
that promised a 50% increase in yield. She harvested 1,980 buds of roses. Did
the fertilizer live up to its promise?

Answer 1

without the fertilizer, Jane harvested 12,000 buds of roses.

By trying a new fertilizer, Jane expected 50% increase in buds production to which should amount to $\frac{150}{100}\times 12000 = 18000$ buds but she harvested 1,980 buds of roses which is below the expected number of buds.

The the fertilizer did not live up to its promise