algebraic expressions Model Questions & Answers, Practice Test for ssc mts paper 1 2023
ssc mts paper 1 2023 SYLLABUS WISE SUBJECTS MCQs
Number System
LCM & HCF
Ratio Proportion & Partnership
Percentages
Profit & Loss
Time & Work
Time & Distance
Simple Interest & Compound Interest
Mensuration: Area & Volumes
Algebraic Expressions
Trigonometric Ratios & Identity
The age of Mr. Ramesh is four times the age of his son. After ten years the age of Mr. Ramesh will be only twice the age of his son. Find the present age of Mr. Ramesh's, son.
Answer: (b)
Let the present ages of Mr. Ramesh and his son be x and y respectively.
∴ x = 4y and (x + 10) = 2(y + 10) Solving the above two equations, we get x = 20 years and y = 5 years
If 2x + y = 17 y, 2z = 15 and x + z = 9 then what is the value of 4x + 3y + z?
Answer: (a)
2x + y = 17 ⇒ y = 17– 2x ...... (i)
y + 2z = 15 ⇒ 17 – 2 x + 2z = 15
⇒2x – 2z = 2 ⇒ x – z = 1 ...... (ii)
and x + z = 9 ...... (iii)
Solving equations (i) and (ii), we get
x = 5, z = 4
∴ y = 17 – 2x = 17 – 10 = 7
4x + 3y + z = 4 × 5 + 3 × 7 + 4
= 20 + 21 + 4 = 45
Which of the following values of P satisfy the inequality P(P – 3) < 4P – 12?
Answer: (a)
P (P – 3) < 4 (P – 3);
P (P – 3) – 4 (P – 3) < 0
(P – 3) (P – 4) < 0
This means that when
(P – 3) > 0 then (P – 4) < 0 ........(i)
or, when (P – 3) < 0 then (P – 4) > 0 ........(ii)
From (i),
P > 3 and P < 4
∴ 3 < P < 4
From (ii)
P < 3 and P > 4
The sum of four numbers is 64. If you add 3 to the first number, 3 is subtracted from the second number, the third is multiplied by 3 and the fourth is divided by 3, then all the results are equal. What is the difference between the largest and the smallest of the original numbers?
Answer: (c)
Let the first, second, third and fourth numbers be a, b, c and d respectively.
According to the question,
a + b + c + d = 64 ....(i)
and a + 3 = b – 3 = 3c = $d/3$
i.e., a + 3 = b – 3 ⇒ b = a + 6 ....(ii)
Also, c = ${a+3}/3$ and d = 3 ( a + 3)
Solving the above eqns, we get
a = 9, b = 15, c = 4 and d = 36
∴ Difference between the largest and the smallest numbers = 36 – 4 = 32
The difference between a two-digit number and the number obtained by interchanging the digits is 9. What is the difference between the two digits of the number?
Answer: (b)
Suppose the two-digit number be 10x + y.
Then we have been given
l0x + y – (10y + x) = 9
⇒9x – 9y = 9
⇒x – y = 1
Hence, the required difference = 1 Note that if the difference between a two-digit number and the number obtained by interchanging the digits is D, then the difference between the two digits of the number = $D/9$
ssc mts paper 1 2023 IMPORTANT QUESTION AND ANSWERS
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