A bill for Rs.74 was paid with Rs.5 and Re.1 coins. If total number of coins given is 50, then the number of Rs.5 coins is equal to


A) 5

B) 6

C) 8

D) 10

Correct Answer:
B) 6

Description for Correct answer:
Let number of Rs.5 coin be x and Re.1 coin be y.

\( \Large \therefore x+y = 50 \) ...(i)

\( \Large 5x+y = 74 \) ...(ii)

Solving equations (i) and (ii), we get x = 6

Hence, number of Rs.5 coins = 6.

Part of solved Polynomials questions and answers : >> Elementary Mathematics >> Polynomials








Comments

No comments available




Similar Questions
1). An aircraft carries 2880 litres of fuel distributed in three tanks in the ratio 3 : 4 : 5. The quantity in the 5 parts tank is
A). 720 litres
B). 800 litres
C). 1000 litres
D). 1200 litres
-- View Answer
2). A quantity of alloy has a mass of 400 kg. It contains copper, lead and tin in the ratios, by mass, 15 : 3 : 2. The mass of lead in alloy is equal to
A). 40 kg
B). 60 kg
C). 200kg
D). 300 kg
-- View Answer
3). If \( \Large x^{\frac{1}{3}}+y^{\frac{1}{3}}+z^{\frac{1}{3}}=0 \), then the value of \( \Large \left(x+y+z\right)^{3} \) will be
A). \( \Large 3x^{\frac{1}{3}}.y^{\frac{1}{3}}.z^{\frac{1}{3}} \)
B). \( \Large 9x^{\frac{2}{3}}.y^{\frac{2}{3}}.z^{\frac{2}{3}} \)
C). \( \Large 27 xyz \)
D). 0
-- View Answer
4). If \( \Large 3^{x}=5^{y}=45^{z} \), then
A). \( \Large x+y+z=0 \)
B). \( \Large \frac{2}{x}=\frac{1}{z}-\frac{1}{y} \)
C). \( \Large \frac{2}{y}=\frac{1}{x}-\frac{1}{z} \)
D). \( \Large \frac{2}{z}=\frac{1}{y}-\frac{1}{x} \)
-- View Answer
5). If \( \Large 3^{x}-3^{x-1}=18 \), then the value of \( \Large x^{x} \) is equal to
A). 3
B). 8
C). 27
D). 216
-- View Answer


6). If \( \Large x=3-\sqrt{5} \), then value of \( \Large x^{2}+\frac{16}{x^{2}} \) is equal to
A). 10
B). 24
C). 26
D). 28
-- View Answer
7). The factors of \( \Large a^{3} + 4a^{2} - 11a - 30 \) are
A). \( \Large \left(a-2\right) \left(a+3\right) \left(a+5\right) \)
B). \( \Large \left(a+2\right) \left(a+3\right) \left(a-5\right) \)
C). \( \Large \left(a+2\right) \left(a-3\right) \left(a-5\right) \)
D). \( \Large \left(a+2\right) \left(a-3\right) \left(a+5\right) \)
-- View Answer
8). If \( \Large a^{2}= \left(b+c\right),\ b^{2}= \left(c+a\right),\ c^{2}= \left(a+b\right) \) then the value of \( \Large \frac{1}{a+1}+\frac{1}{b+1}+\frac{1}{c+1} \) is equal to
A). 1
B). -1
C). 0
D). \( \Large - \left(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\right) \)
-- View Answer
9). When a polynomial is divided by a linear polynomial, then the remainder is
A). a linear polynomial
B). constant
C). zero
D). either constant or zero
-- View Answer
10). Consider the following statements :
I. Every rational function is a polynomial .  
II. A rational function may be a polynomial  
III. A rational function cannot be a polynomial  
IV. A polynomial is always a rational function.  
Which of these are correct?
A). II and IV
B). I and IV
C). III and IV
D). I and II
-- View Answer