X = 200 because when finding 10% of s number we divide the number to 10. then you find 23 percent of 200. which is 46, because percentages are found out of 100 and 200 is 100 multiplied by 2. So we have to multiply 23 by 2. the answer is 46.
I understand that it means that out of every 10 hours, a cat spends 7 sleeping (not 7 hours in a day).
this means that a cat is sleeping

a percentage stays constant, this means that a cat sleeps 70 % of each 10 hours, but also 70% of the day.
Answer:
11.4972 USD
Step-by-step explanation:
Approx. 11.50
2.1S + 4.8H = 2808
H = 2S
2.1S + 4.8(2S) = 2808
2.1S + 9.6S = 2808
11.7S = 2808
S = 2808/11.7
S = 240
H = 2S
H = 2(240)
H = 480
so the standard version (S) has 240 downloads and the high quality version (H) has 480 downloads