Question

A student secured 80% of the total marks and got 720 marks.How many marks did a student who scored 90% get?​

Answer 1

Answer:

Step-by-step explanation:

let 'x' is total marks of test

$80 \% \;\text{of x} =720\\=\\\frac{80}{100} \times x =720\\\\x= \frac{720 \times 100}{80}\\\\x=900\\\\so \\\\90\% \;\text{of 900 is } \\\\\frac{90}{100} \times 900\\\\=810$