Question

10. Rita decides to decorate her wall with three colours red, blue and orange. She wants to use blue
colour for part of the wall, red colour for of the remaining part and orange for the rest.
a. What fraction of the wall will be coloured red?
b. What fraction of the wall will be coloured orange?
C. If the wall has an area of 25 square metres, what area of the wall will be orange coloured?​

Answer 1

Answer:

Rita decides to decorate her wall with three colours red, blue and orange ......(!)

a) ⅓ is the Fraction of Wall coloured Red.

i.e. 3 colours

Red + Blue + Orange = 3 Colours

= ⅓

b) ⅓ is Fraction of Wall coloured Orange.

i.e. 3 colours

Orange + Blue + Red = 3 Colours

= ⅓

c) Area of Wall = (25 Metres²)

so,

the Wall coloured Orange is ⅓

Then,

= 25 × 1/3

= (8.33 Metres²)

Answer 2

Explanation:-

Total area of the wall = 25 m2

Area covered by blue colour = 25×25 = 10 m2

Area of the wall left = (25−10)m2 = 15 m2

Area covered by Red colour = 23×15 = 10 m2

Area of the wall left = (15−10)m2 = 5m2

Hence,

Area of the wall Red coloured =10 m2,

Area of the wall Blue coloured =10 m2,

Area of the wall Orange coloured =5 m2

Fraction of wall coloured by Red

$= \frac{10}{25} \\ \\ = \frac{2}{5}$

Fraction of wall coloured by Orange

$= \frac{5}{25} = \frac{1}{5}$