Question

12. Doma's class has 48 children. Of them 25 per cent are boys. How many boys are there in
Doma's class?
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Answer 1

Answer:

12

Step-by-step explanation:

Step 1: Our output value is 48.

Step 2: We represent the unknown value with x.

Step 3: From step 1 above,48=100%.

Step 4: Similarly, x = 25%

Step 5: This results in a pair of simple equations:

48=100% (1)

x = 25% (2)

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

48 by x = 100% by 25%

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of bothequations have the same unit (%); we have

Step 7: Again, the reciprocal of both sides gives

x by 48 = 25 by 100

x = 12

Therefore,25% of 48 is 12

Answer 2

Answer:

Doma's class has 48 children. Of them 25 per cent are boys. How many boys are there in

Doma's class?