Hector owns science fiction novels, coming c books, and mystery novels. He has half as many science fiction novels as comic books and he has three times as many mystery novels as comic books. If he owns a totals of 54 books how many of those book are science friction novels?
X Comic books.
X/2 Science fiction.
3X Mystery novels.
X + X/2 + 3X = 54,
Multiply both sides by 2:
2X + X + 6X = 108,
9X = 108,
X = 12,
X/2 = 6 Science fictions novels.
One eight of Tony’s books are mystery books.he has 3 mystery books.how many dose he have in all
gh bought some magazines that cost $3.95 each and some books that cost $8.95 each. He spent a total of $47.65. If Hugh bought 3 magazines, how many books did he buy?
The equation that models the problem is 3.95m + 8.95b = 47.65, where m is the number of magazines and b is the number of books.
To find out the number of science fiction novels Hector owns, we can follow these steps:
1. Let's assume the number of comic books Hector owns as "x."
2. According to the information given, Hector has half as many science fiction novels as comic books. Therefore, the number of science fiction novels would be x/2.
3. Additionally, Hector has three times as many mystery novels as comic books. Thus, the number of mystery novels would be 3x.
4. The total number of books Hector owns is given as 54. Therefore, we can create an equation to represent this information: x + x/2 + 3x = 54.
5. To solve the equation, we can combine like terms: 2x + x + 6x/2 = 54, which simplifies to 2x + x + 3x = 54. This further simplifies to 6x = 54.
6. Solving for x, we divide both sides of the equation by 6: 6x/6 = 54/6, which gives x = 9.
7. Now that we know x, we can determine the number of science fiction novels Hector owns: x/2 = 9/2 = 4.5.
However, the number of books should be a whole number, so it is not possible for Hector to own 4.5 science fiction novels. It seems there has been an error in the information provided or in the calculations. Please double-check the details and try again.