Answer: 50 days
Step-by-step explanation:
Hi, to answer this question we have to write equations.
The money raised by each company will be equal to the fixed amount donated plus the product of the donations per day and the number of days passed.
Company A = 500+ 5x
Company B = 400+ 7x
Where x is the number of days
If the amounts donated are the same:
A = B
So:
500+5x = 400+7x
500-400 =7x-5x
100=2x
100/2 =x
50 days =x