15. Rohit scored 180 marks in the first test and 150 marks in the second test. The maximum mark in each test
is 200. What is the decrease in his performance in percentage points?
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Step-by-step explanation:
1.
180÷200×100
900÷10
90%
2.150÷200×100
300÷4
75%
90-75
15%
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