Question
The cost of 2 pencils and 3 pens is RS. 55 and the cost
of 7 pencils and 2 pens is RS. 65. What is the total price (in RS) of 2 pens and one pencil?Solution
let the price of one pencil = x and the price of one pen = y ATQ- 2x + 3y = 55 .... (1) 7x +2y = 65 ......(2)  Eq (1) multiplied by 2 and eq (2) multiplied by 3. 4x +6y = 110 21x +6y =195 17x = 85 x = 5 put the value of x in eq (1) y =15 now price of 2 pencils + 1 pens =2 × 15+5= 35
What is the unit of measurement for the intensity of sound?
Which of the following statements is INCORRECT in the context of the Constituent Assembly of India?
A. his subjects wisely
B. was a very kind and generousÂ
C. king who looked after
D. everyone said that heÂ
What does the word "Thuppakki' mean for Thiruvalluvar in this Kural?
"Thupparku Thuppaya Thuppakki Thupparku
Thuppaya Thoovum Mazhai"...
 What is the chemical formula of baking soda?
What is the approximate age of the Earth?
'Rajasthan Kabir Yatra' is related to which of the following field?
Which term is not associated with chess?
The Parliamentary left in India is significantly denotes, a Ideology of __________ socio-économic and political design in the Post Colonial situation
Which of the following material cannot be used to make a lens?
Relevant for Exams:
