एक वस्तु की कीमत (P(n)=a+15n) है। यदि (P(4)=140), तो (P(9)) क्या है?
The price of an item is (P(n)=a+15n). If (P(4)=140), what is (P(9))?
Explanation opens after your attempt
B. (215)
Concept
From (a+60=140), (a=80). (P(9)=80+135=215).
Why this answer is correct
The correct answer is B. (215). From (a+60=140), (a=80). (P(9)=80+135=215).
Exam Tip
(a+60=140) से (a=80) है। (P(9)=80+135=215) है।
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