Question

Concrete is made by mixing screenings cement and sand in the ratio 3:1:15. How much sand would be needed to make 125 tonnes of concrete?

Answer 1

625 I think, 125/3 which is a decimal and then do 15 times that decimal, on my calculator I can copy and paste the decimal (cause it’s long one) and I got 625. The calculator app I use is called calculator + if you want to get it!