A teacher has 24 red pens. If the ratio of red pens to blue pens she owns is 8:7, how many pens does she have in total?

Ratio of red to blue is 8:7 . . . but she has 24 red pens . . . not 7, so the ratio leaves us to figure out how many blue pens . . . x . . . at a ratio of 24:x . . . we know that whether she has 24 or 7 or any number of red pens, we know the ratio will always be the same . . . so 24/x = 8/7 . . . solve by multiplying x to both sides and then multiplying both sides by 7/8/. . . 24*7/8 . . . x = 21 blue pens. 21 + 24 = 45 pens total.

Answered by Anonymous | 2024-06-10

she had 45 pens in total. if you multiply 8 by 3 you get 24. so you multiply 7 by 3 and get 21. then just add 21 and 24 to get 45.

Answered by Anonymous | 2024-06-10

The teacher has a total of 45 pens, consisting of 24 red pens and 21 blue pens. The ratio of red to blue pens is maintained at 8:7. Therefore, the solution follows from calculating the parts of the ratio and determining the total number of pens.
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Answered by Anonymous | 2024-12-16