Answer:
Explanation:
This looks like a pyramid problem. The sum of the 2 numbers in the bottom boxes must equal the number in the top box. All you have to do to find the missing number is subtract the bottom number from the top number.
a. 200 - 30 = 170
b. 200 - 30 = 130
c. 200 - 105 = 95
d. 200 - 85 = 115