The ratio of the number of math books to the number of comic books on a shelf is 7:3. There are 21 comic books on the shelf. Fin

Question

2 years ago

10

d the number of math books on the shelf.

2 answers:

Sauron [17] · Answer 1 · 2022-08-22T16:55:43+03:00

7 0

Answer:

There are 49 math books on the shelf.

Step-by-step explanation:

math books : comic books

$7$ : $3$

$x$ : $21$

$21$ ÷ $3=7$

$7*7=49$

$x=49$

NNADVOKAT [17] · Answer 2 · 2022-08-22T17:59:45+03:00

3 0

Answer:

$49$

Step-by-step explanation:

Let the number of math books on the shelf be $x$ .

$7:3\\x:21$

Cross multiply the ratio and solve for $x$ .

$3x=7 \times 21\\3x=147\\x=49$

There are 49 math books on the shelf.