यदि (K(t)=350-10t), तो (K(3t)-K(7t)) क्या है?
If (K(t)=350-10t), what is (K(3t)-K(7t))?
Explanation opens after your attempt
B. (40t)
Concept
(K(3t)=350-30t) and (K(7t)=350-70t). The difference is (40t).
Why this answer is correct
The correct answer is B. (40t). (K(3t)=350-30t) and (K(7t)=350-70t). The difference is (40t).
Exam Tip
(K(3t)=350-30t) और (K(7t)=350-70t) है। अंतर (40t) है।
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