First you have to calculate the volume of the box V=a * b * c if it is a= 3m= 300cm, b=1m 68cm = 168cm and c= 120cm, then V= 300cm * 168cm * 120cm = 6.048.000cm^3
Now you have to calculate the volume of the soap bars V1= a1 * b1 * c1 if it is a1=12cm, b1=8cm and c1=7cm
V1= 12 * 8 * 7 = 672 cm^3
When you divide V and V1 you will get the required number
we know that 60% of x is 120. we can rewrite this to .6x = 120, to get x we divide both sides by .6, so x = 200. now 120 + 30 = 150. then we divide 150 out of 200 which is .75 it 75%
Well he wants to buy 100 blue balloons so that would cost 100*0.6. The cost of white balloons(because they are half off) are w*0.3. He has a total of 150 dollars to we get 100*0.6+w*0.3=150 or 60+0.3w=150 Thus we get c
