Question

help me solving this question as fast as possible plz ​

Answer 1

Answer:

7 kg

Step-by-step explanation:

Let the Mass of the circle shaped figure be m kg and triangle shaped figure be n kg.

Therefore, from the first figure

2m + 3n = 32 ---(i)

and from the second figure,

2m + n = 20 ----(ii)

Multiplying eqn (ii) by 3,

6m + 3n = 60 ---(iii)

Subtract (i) and (iii),

2m + 3n - 6m -3n = 32 - 60

=> -4m = -28

=> m = 28/4

=> m = 7

Therefore, mass of the circle shaped figure is 7 kg.

Answer 2

Answer: 7kg

let the weight of triangular piece be x and spherical be y

so,

in first

3x+2y=32

or,2y=32-3x............(1)

in second

x+2y=20

or,2y=20-x..........(2)

from 1 and 2

32-3x=20-x

12=2x

x=6

putting value of xin (1)

2y=32-3*6

2y=14

y=7

in third

weight of 1 spherical piece =7kg