Answer:
30%
Step-by-step explanation:
The entire piece of land has an area of 5 ha.
He uses 1.8 ha out of the 5 ha for planting.
He grows corn in 5/6 of the 1.8 ha.
5/6 of 1.8 ha is 5/6 * 1.8 ha = 1.5 ha.
Now we need to know what percent 1.5 ha is of 5 ha.
To find what percent a part is of the whole, divide the part by the whole and multiply by 100.
percent = 1.5/5 * 100% = 0.3 * 100% = 30%
Answer: 30%
