Answer:
204
Step-by-step explanation:
On the first night, Peter counted 120 sheep. The next night, he counted for 30% less time, which means he counted for 70% of the time he did on the second night
So, the number of sheep he counted on the second night is 0.7 * 120 = 84
The total number of sheep Peter counted over the two nights is 120 + 84 = 204.