Answer:
Step-by-step explanation:
If the third multiple of the whole number is . This means that is completely divisible by the number .
So, the whole number is .
The fifth multiple would mean the product of and
The fifth multiple of the whole number is .
Answer: 70 mph
a) 1st and 2nd
b) 4th one
5
5*20=100
t=1
16-2t=t+9+4t
Combine like term
16-2t = 5t+9
Add 2t to each side
16-2t +2t= 5t+2t+9
16 = 7t+9
Subtract 9 from each side
16-9 = 7t+9-9
7 = 7t
Divide each side by 7
7/7 = 7t/7
1=t