Respuesta :
so if 60 marks is 40%do buildind blocks 40%+ 40 % 80% = 120 marks so ad 20 % which is 30 marks so full marks is 150
Method 1:
[tex]\begin{array}{ccc}60&-&40\%\\x&-&100\%\end{array}\ \ \ \ |cross\ multiply\\\\40x=60\cdot100\\40x=6000\ \ \ \ |divide\ both\ sides\ by\ 40\\x=150[/tex]
Answer: Full marks is 150.
Method 2
[tex]\begin{array}{cccc}60&-&40\%&|divide\ both\ sides\ by\ 4\\15&-&10\%&|multiply\ both\ sides\ by\ 10\\150&-&100\%\end{array} [/tex]
Answer: Full marks is 150.
[tex]\begin{array}{ccc}60&-&40\%\\x&-&100\%\end{array}\ \ \ \ |cross\ multiply\\\\40x=60\cdot100\\40x=6000\ \ \ \ |divide\ both\ sides\ by\ 40\\x=150[/tex]
Answer: Full marks is 150.
Method 2
[tex]\begin{array}{cccc}60&-&40\%&|divide\ both\ sides\ by\ 4\\15&-&10\%&|multiply\ both\ sides\ by\ 10\\150&-&100\%\end{array} [/tex]
Answer: Full marks is 150.