Question

Rohit scored 180 marks in the first test and 150 marks in the second test. The maximum marks in each test is 200. What is the decrease in his performance in percentage points?

(a) 20%
(b) 15%
(c) 25%
(d) 23%

Answer 1

Marks scored in first test $=180$
Marks scored in second test $=150$
Maximum marks $=200$
Decrease in marks $=180-150=30$
Decrease in performance in percentage = $\frac{30}{200}$×100=15%
Hence, the correct option is (b).