Question

A typist uses a sheet measuring 20 cm by 30 cm (lengthwise). If a margin of 2 cm is left on each side and a 3 cm margin on top and bottom, then what percent of the page is used for typing?(a) 40% (b) 64% (c) 72% (d) 60%

Answer 1

Area of the sheet = (20×30)cm2  

Area used for typing = [(20-4)×(30-6)]cm2   

required % =38/4600×100=64%

Answer 2

Answer:

64% of the page is used for typing .

Step-by-step explanation:

Length of sheet = 20 cm

Breadth of sheet = 30 cm

Area of sheet =  $Length \times Breadth = 20 \times 30 = 600 cm^2$

A margin of 2 cm is left on each side

So, length of area of typing = 20-(2+2)=16 cm

A 3 cm margin on top and bottom

So, width of area of typing = 30-(3+3)=24 cm

So, area of typing = $Length \times Breadth = 16 \times 24 = 384 cm^2$

So, The percent of the page is used for typing= $\frac{384}{600} \times 100=64\%$

Hence 64% of the page is used for typing