Question : The cost of 4 pens, 6 notebooks, and 9 files is Rs. 305. The cost of 3 pens, 4 notebooks and 2 files is Rs. 145. What is the cost (in Rs.) of 5 pens, 8 notebooks, and 16 files?
Option 1: 515
Option 2: 565
Option 3: 540
Option 4: Can not be determined
Latest: SSC CGL Tier 1 Result 2024 Out | SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL complete guide
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 565
Solution : Let the cost of 1 pen, 1 notebook and 1 file be Rs. $x, y$ and $z$, respectively. The cost of 4 pens, 6 notebooks, and 9 files is Rs. 305. The cost of 3 pens, 4 notebooks and 2 files is Rs. 145. So, $4x + 6y+ 9z = 305$ (Equation1) $3x + 4y + 2z = 145$ (Equation2) Performing 2 × (Equation1) – (Equation2), we get $5x + 8y + 16z = 2(305) - 145$ ⇒ $5x + 8y + 16z = 565$ Hence, the correct answer is 565.
Candidates can download this ebook to know all about SSC CGL.
Result | Eligibility | Application | Selection Process | Preparation Tips | Admit Card | Answer Key
Question : The cost of 32 pens and 12 pencils is INR 790. What is the total cost (in INR) of 8 pens and 3 pencils together?
Question : The value of $\sqrt{9+2\sqrt{16}+\sqrt[3]{512}}$ is:
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? × and +, 9 and 6
Question : Directions: By interchanging the given two signs which of the following equations will be not correct? + and –
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? + and –, 6 and 3
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile