Answer:
4/8 or
1/2
Step-by-step explanation:
if there are 8 students and 4 of them study Chemistry then we take those 4 out of the equation then there are 4 left and there are now 4 possibly choses
If x is the amount of time Gillian takes,
1/10 - 1/x = 1/25
Therefore, the answer is A
Are you asking what the answer is because you are not asking us anything. I would really like to help you out but I need to know what the question is first.
Find the Least Common Denominator (LCD) which is 28.
-1/4 (7) = -7/28
-3/7 (4) = -12/28
-7 - 12 = -19
-19/28
Simplify if you can.