Answer:
Mass of B in Kg = -558.44kg
Step-by-step explanation:
LET'S DO THIS!
Total mass of A, B and C = 1.95kg
Mass of A = 700 kg
Mass of B = 4x the mass of c (4 x C) which is 4c
Mass of C = ? ( let's call it C )
Adding all together
700 + 4c + C = 1.95
Add like terms
700 + 5C = 1.95
5C = 1.95 - 700
5C = -698.05
C = -698.05 ÷ 5
C = -139.61
To find B now
Remember they said B is 4 times the mass of C and C = -139.61
therefore B = 4 × -139.61
B = -558.44 kg
To check if we are correct, we add the masses of A, B and C to see if it equals their total mass which is 1.95kg
Using your calculator:
= 700 + ( -558.44 ) + ( -139.61 )
= 700 - 558.44 -139.61
= 1.95 kg
Which makes us CORRECT ✅.
Hope this helps.
Good luck ✅.
