The cost of 21 pencils and 9 clippers is ₹ 819. The cost price of 7 pencils and 3 clippers is [DMRC-Train… · ABC26GN3388

Subject: General Aptitude · Chapter: Chain Rule

The cost of 21 pencils and 9 clippers is ₹ 819. The cost price of 7 pencils and 3 clippers is [DMRC-Train Operator (Station Controller), 2012]

(a)₹ 204

(b)₹ 409

(c)₹ 273

(d)₹ 208

Answer

Answer (as printed): C

Explanation

Cost of 21 pencils and 9 clippers $=₹ 819$ Cost of 7 pencils and 3 clippers $=\frac{819}{3}=₹ 273$

Explanation as extracted from the printed page; notation may be imperfect.

Study loop for Chain Rule