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MPASCO318IN
Answered

D. Solve each problem
18 Four pencil orasers cost P12, how many erasers can
buy for P63
19. There are 4 boys to 7 girls in a class. At the same ratio
how many boys are there in 42 girls?
20. For every 3 classes in the intermediate grades, there
are 5 teachers. How many teachers are there for 15
classes?​

Sagot :

BIBINGKA2IN

Answer:

18. 21

19. 24

20. 9

Step-by-step explanation:

18. 4:12 = x:63

12x = 63(4)

12x = 252

x = 21

19. 4:7 = x:42

7x = 42(4)

7x = 168

x = 24

20. 3:5 = x:15

5x = 15(3)

5x = 45

x = 9

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