Answer:
we know
simple interest=principal×time×rate/100
then
S.I=($200×5×2)/100
so S.I=$20
Answer:
6 weeks
Step-by-step explanation:
Set up a proportion where x is the amount of time with 12 pupils:
= 
Cross multiply and solve for x:
4x = 24
x = 6
So, it will take 12 pupils 6 weeks to complete the job.
Answer:
The answer is B hope this is right
Step-by-step explanation:
Answer:
y =(t-r)/s
Step-by-step explanation:
r + sy = t
Subtract r from both the sides,
sy = t - r
Divide both the sides by s,
y = (t - r) / s