340 you were right
Step-by-step explanation:
Answer:
0 I think??
Step-by-step explanation:




14+36+h=400
50+h=400
-50 -50
---------------------
h=350mm
First: work out the difference (decrease) between the two numbers you are comparing. Then divide the decrease by the original number and multiply the answer by 100. If your answer is a negative number, then this is a percentage increase. :)