See attached photo for answers. let me know if you are doing rounding to a specific decimal.
Can you write the full question
X = low-energy lamp
y = high-energy lamp
1) 4x + 5y
2) 120= 4x + 5y
L = 24f
l/24 = f
Hope this helps!
First find the numbers with the factors of:
2,3,4,5,6,7
find the minum
if something has a factor of 6 then it also has a factor of 3 and 2 so just multiply by the lcm of all of them which is found by
2=2
3=3
4=2 times 2
5=5
6=2 times 3
7=7
LCM=2 times 2 times 3 times 5 times 7=420
now divide 100000 by 420 and round down
100000/420=238.095=238.1 round doen 238
multiply 420 by 238 and get 99960
that is the answer 99960