N=number of African animals in the zoo;
we suggest this equation:
172=45+n/2
Least common multiple=2
172*2=45*2+n
344=90+n
n=344-90
n=254
Answer: there are 254 African animals in the zoo.
14
I believe see if someone else has a different answer
Answer:
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Step-by-step explanation:
Answer:
t = 5 seconds
Step-by-step explanation:
We have,
Speed of the truck, v = 4 m/s
It is required to find the time taken by a truck to travel 20 meters. It can be assumed that the time is t. Using the formula of speed.

After rearranging, we get :

So, the time taken by a truck to travel 20 meters is 5 seconds.