alleryचार दिवसांसाठी सरासरी 2.5 तास अभ्यास करा. एकूण सरासरी 3 तासांसाठी पाचव्या दिवसाचे तास शोधा.
A4 h
B5 h
C4.5 h
D5.5 h
Answer & Solution
Correct answer: B. 5 h
पाचव्या दिवशी 5 × 3 − 4 × 2.5 = 5 तासांचा अभ्यास आवश्यक आहे.
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