let's recall that a year has 12 months, so 15 months is really 15/12 years.


No, to find the least number of burgers and buns, you should find out the LCM of 15 and 6, not their product.
LCM = 30,
so they need to buy atleast 30 of each item.
Answer:
25
Step-by-step explanation:
65+A=90
A=90-65=25
Answer:
(C) 10m + 7n - 14
Step-by-step explanation:
[Q-R]+[S-T] =[(7m+3n)-(11-2m)]+[(n+5)-(-m-3n+8)]=
=[7m+3n-11+2m] + [n+5+m+3n-8]=[9m+3n-11] + [4n+m - 3]=
=9m+3n-11+4n+m-3=10m + 7n - 14