Answer: Option 'C' is correct.
Step-by-step explanation:
Since we have given that
Original price of a telescope = $400
Mark up percent = 32%
So, Price after mark-up is given by

Hence, Option 'C' is correct.
Answer:
no entiendo :C
Step-by-step explanation:
Answer:
98 : 15 = 6 R 8
She can pay for six months 6*15 = $90 and she will have $8 left.
Answer:
7.2 minutes
Step-by-step explanation:
The formula to find the time using the radioactive decay rate formula is given as:
t = t½ × In(Nt/No)/-In2
Where
t½ = half life = 6 minutes
No = Initial Amount = 260 grams
Nt = Amount after decay
= 113 grams
Hence:
t = 6 × In(113/260)/-In2
t = 7.2131331036796 minutes
Approximately = 7.2 minutes