38. If the cost of a book worth Rs. 50 is increased by Rs. 25 more, then how much is the rate of increase ? /यदि किसी पुस्तक की कीमत रु. 50 रुपये की वृद्धि हुई है। 25 अधिक है, तो वृद्धि की दर कितनी है?
10
25
20
50
Answer / उत्तर -50
explanation / स्पष्टीकरण :-
Cost of book = Rs. 50
Increment = Rs. 25
Calculation:
Rate of increase = (25/50) × 100%
⇒ 50%
explanation / स्पष्टीकरण :-
Cost of book = Rs. 50
Increment = Rs. 25
Calculation:
Rate of increase = (25/50) × 100%
⇒ 50%
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