Thanks, and same to you Synth.
I'm just wondering why you posted this on a math website...
What are your plans for thanksgiving this year?
And yes, I was reffering to the tube link
Yes, That was very good,
I did understand the explination,
thank you Melody
Yes, but it is not the exact math problem
Both Circles are the same size, the box is made of perfect 90° angles,
Here is an update, left something out
2400 x 85% =2,040 Kg -the weight of cement,sand and stone. 1/[1+2+5] x 2,040 =255 kg is cement. 2/[1+2+5] x 2,040 =510 kg is sand 5/[1+2+5] x 2,040 =1,275 kg is stone
Is exactly what I got....