Question

Find class mark
160-180​

Answer 1

Answer:

The answer is -20

As 160 is positive and 180 is negative so + × - = -

Step-by-step explanation:

so the answer is -20

I hope this helps

Answer 2

Answer:

170

Step-by-step explanation:

class mark= upper limit+lower limit/2

                   =(180+160)/2

                   =340/2

                   = 170