All sides are equal on a triangle
Let x be the original cost for the sofa.
X x (1 + 0.07) =3210
X = 3000
Now we know the cost for the sofa.
Let p be the profit percent.
3000 x (1 + p) = 3360
P = 0.12
So the percentage profit is 12%
-3
1. Add -1.4 to each side.
2. Divide by 0.7 on each side.
Hope this helps
4. 1 kg because you will have to divide 4100 by 1000. Ps. 1 kg is equal to 1000 grams.
