How to calculate the cost of C25 concrete?

The strength of artificial concrete is C25. According to Jiangsu 04 valuation manual, the content per cubic meter is (maximum particle size 3 1.5mm):

Grade 32.5 cement: 267kg.

Medium sand: 0.867 tons

Gravel 5-31.5mm:1.235t.

Water quantity: 0. 19 m3

To sum up: 267 * 0.38+0.867 * 85 *1.6+1.235 *10+0.19 * 3 =10/kloc-0.

Note: I calculated according to your cubic meter of gravel in 85 yuan. Generally, crushed stones are purchased by tons, and the price is 80 yuan/ton. In order to cooperate with you, I can only convert it into tonnage according to the ratio of 1.6. Prices in your are very high. Pay attention to the purchase price.