C and now I need 20 characters thank you
Answer:
acute
Step-by-step explanation:
5 is lower than a 90* angle
if this is wrong I'm very sorry.
43x5= 215
215 pupils
215-200=15
15 seats
Solution:
we are given that
John is 3 years older than Jim. Jim is 4 years less than half of Dana’s age.
Let the age of Jim be x years then we can say
Age of John
If diana Age is D then

It can be re-wriiten as
Diana age 
Given that their ages add up to 167

Hence jim is 39 nyears old, John is 39+3=42 years old. and Diana is 2*39+8=78+8=86 years old.
Sorry, I think you forgot the photo of the problem