ejemplo 1

gistfile1.txt

pragma solidity ^0.4.25;

contract Ejemplo1{
    
    uint256 notaFinal;
    
    constructor(){}
    
    function calcularNotaFinal(uint256 notaContenido, uint256 notaGrupal, uint256 notaIndividual) public{
        notaFinal =  ((notaContenido*70) + (notaGrupal * 20) + (notaIndividual * 10))/100;
    }
    
    function obtenerNotaFinal() public view returns(uint256){
        return notaFinal;
    }
}


[
	{
		"constant": false,
		"inputs": [
			{
				"name": "notaContenido",
				"type": "uint256"
			},
			{
				"name": "notaGrupal",
				"type": "uint256"
			},
			{
				"name": "notaIndividual",
				"type": "uint256"
			}
		],
		"name": "calcularNotaFinal",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "constructor"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "obtenerNotaFinal",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	}
]