Question

object A is 5kg heavier than object B and the mass of object C is twice the mass of object A. If the total mass of the three is 225 kg, find the mass of object C.​

Answer 1

Answer:

a = 2c

b = a-5

We need to find c

a + b + c = 225

2c + 2c-5 + c = 225

substituting the value as c

5c-5=225

5c = 230

c = 230/5

c = 46

Answer 2

Answer:

Object A= 57.5 kg

Object B= 52.5 kg

Object C= 115 kg

Step-by-step explanation:

Let the mass of object A= x kg

Mass of object B=(x+5) kg

Mass of object C= 2(x+5)= (2x+10) kg

Total mass of three objects= 225 kg

x+(x+5)+(2x+10)= 225

x+x+5+2x+10= 225

4x+15=225

4x=210

x=52.5 kg

Mass of object A= 52.5+5= 57.5 kg

Mass of object B= 52.5 kg

Mass of object C= 2(57.5)= 115 kg

Hope It Helps :)