Question

3. What is 50% of a number whose 200% is 40 ?

Answer 1

Answer:

Let the number be x.

200% × x = 20.

200/100 × x = 20

2x = 20

x = 20÷2

x = 10.

50% of a number = 50% × 10 = 50÷100×10 = 0.5 × 10 = 5.

The required number be 5.

Step-by-step explanation:

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Answer 2

Answer:

Let the number be x

200% * x = 40

then,

200/100*x=40

2x=40

x=40/2

x=20

then,

50% * 20=?

50/100*20

(1/2) or 0.5*20=10