Question

Please solve step by step

Answer 1

= no. of students who got more than 70%
= 72+75+74 = 221
= 221 St. got more than 70%
= no. of students who got less than 65%
= 0 St. got less than 65%
= no. of students who got less than 80%
= 68+69+72+74+75 = 358
= 358 St. got less than 80%