NIMCET 2020 Reasoning PYQ — Sum of ages of Anu and Bhanu is 10 years more than sum of ages of… | Mathem Solvex | Mathem Solvex
Tip:A–D to answerE for explanationV for videoS to reveal answer
NIMCET 2020 — Reasoning PYQ
NIMCET | Reasoning | 2020
Sum of ages of Anu and Bhanu is 10 years more than sum of ages of Bhanu, Chanu and Dhanu. Average age of Chanuand Dhanu is 19 years. Find the average age of Anu and Dhanu if Dhanu is 10 years elder than Chanu.
Choose the correct answer:
A.
36 years
(Correct Answer)
B.
30 years
C.
25 years
D.
31 years
Correct Answer:
36 years
Explanation
Sum of ages of Anu and Bhanu is 10 years more than sum of ages of Bhanu, Chanu and Dhanu Bhanu+Chanu+Dhanu+10=Anu+Bhanu = > Chanu+ Dhanu+ 10= Anu< \beta Average age of Chanu and Dhanu is 19 years. (Chanu+Dhanu)/2=19 Chanu+ Dhanu= 19×2 years Chanu+Dhanu=38 vears < _11> Putting the value of <i1> in <1>, we get: 38+10=Anu So, age of Anu is 48 years Dhanu is 10 years elder than Chanu. Dhanu-10=Chanu\_\underline{\:}_{11}> Putting the value of <111> m <i1>, we get: Dhanu- 10+ Dhanu= 38 =>2Dhanu=38+10 =>2Dhanu=48 =>Dhanu=24 years Average age of Anu and Dhanu=(48+24)÷2 years O O O K. C =72=2 vears =36 years Hence, '36 years'is the correct answer.
Explanation
Sum of ages of Anu and Bhanu is 10 years more than sum of ages of Bhanu, Chanu and Dhanu Bhanu+Chanu+Dhanu+10=Anu+Bhanu = > Chanu+ Dhanu+ 10= Anu< \beta Average age of Chanu and Dhanu is 19 years. (Chanu+Dhanu)/2=19 Chanu+ Dhanu= 19×2 years Chanu+Dhanu=38 vears < _11> Putting the value of <i1> in <1>, we get: 38+10=Anu So, age of Anu is 48 years Dhanu is 10 years elder than Chanu. Dhanu-10=Chanu\_\underline{\:}_{11}> Putting the value of <111> m <i1>, we get: Dhanu- 10+ Dhanu= 38 =>2Dhanu=38+10 =>2Dhanu=48 =>Dhanu=24 years Average age of Anu and Dhanu=(48+24)÷2 years O O O K. C =72=2 vears =36 years Hence, '36 years'is the correct answer.
