Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If (C(t)=350-14t) and (D(t)=80+4t), at what (t) will (C(t)) be (18) less than (D(t))?

Answer and explanation

Correct answer: \(t=16\)

The statement “\(C(t)\) is 18 less than \(D(t)\)” means \(C(t)=D(t)-18\). Thus, \(350-14t=80+4t-18\), giving \(288=18t\) and hence \(t=16\). Checking, \(C(16)=126\) and \(D(16)=144\), so \(C(16)\) is 18 less than \(D(16)\). At \(t=15\), the two values are equal, so it is not correct. Exam tip: for “less than by” questions, subtract the stated difference from the larger quantity.

Related tags

Linear EquationsLinear Growth DecayAlgebraic ComparisonPolynomialsWord ProblemsLinear Growth And DecayIntroduction To PolynomialsMathematics

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.