1 second = 0.0167 minute
540 seconds = 540 * 0.0167 ≈ 9 minute
Hope this helps :)
Mixing the two concentrations would give a new concentration which is in between 50 - 60% .
D. 63% cannot be obtained
Answer:
$1057.3
Step-by-step explanation:
First we'll find the Interest no. 1, which is simple interest, assuming the time 1 year:
S.I= PRT/100
S.I= 780*5.2*1/100
S.I=$40.56
Now we'll find interest no.2, which is compound interest, time is 6 years, Principal amount (780) will remain the same as well as the rate thus (putting in the formula of compound interest- annual-
):

A= $1057.3