Tag: maths

Questions Related to maths

In an examination Karan got  $10$  marks more than Bhavna. Isha got  $5$  marks less than Bhavna. If Trio get a total of  $170 ,$ then what is the marks obtained by Isha?

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $65$

  2. $55$

  3. $50$

  4. $45$

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Correct Option: A

Half the number is added to $18$, then sum is $46$, find the number?

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $26$

  2. $46$

  3. $36$

  4. $56$

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Correct Option: D
Explanation:
Let $x$ be the number

$\dfrac{1}{2}x+18=46$(given)

$\Rightarrow \dfrac{x+36}{2}=46$

$\Rightarrow x+36=92$

$\Rightarrow x=92-36=56$

$\therefore $ the number is $56$

After $12$ years I shall be $3$ times as old as I was $4$ years ago. Find my present age.

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $12$

  2. $13$

  3. $14$

  4. $15$

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Correct Option: A
Explanation:
Let my present age$=x$ years

After $12$ years my age$=x+12$ years

$4$ years ago my age $=x-4$ years

According to the question,

$x+12=3\left(x-4\right)$

$\Rightarrow x+12=3x-12$

$\Rightarrow 3x-x=12+12$

$\Rightarrow 2x=24$ or $x=\dfrac{24}{2}=12$ years.

$\therefore$ my present age is $12$ years.

If six times of a number is $48$, then the number is

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $2$

  2. $4$

  3. $6$

  4. $8$

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Correct Option: D
Explanation:
Let $x$ be the number

$6\times x=48$

$\Rightarrow x=\dfrac{48}{6}=8$

$\therefore$ the number is $8$

The number of girls in a class is $5$ times the number of boys.Which of the following can be the total number of children in a class?

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements
  1. $x+5y$

  2. $y-5x$

  3. $x-5y$

  4. $x+y=5$

Show answer
Correct Option: A
Explanation:
Let the number of girls in a class be $x$

Number of boys be $y$

Given: Number of girls in a class is $5\times$ number of boys

$\therefore x=5y$ 

$\therefore$ total number of children$=x+5y$

Rams age is $1/3$ of his fathers age. Rams fathers age will be $12$ years more than twice of Shyams age after $10$ years. If Shyams $8th$ bright day was celebrated $3$ years before, then what is Rams age at present?

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $14\ years$

  2. $16\ years$

  3. $11\ years$

  4. $13\ years$

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Correct Option: A

If $x$ toffees are distributed equally among $5$ children, then each child gets $5x$ toffees.

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. True

  2. False

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Correct Option: A

In a two digits number, the digit at tens place is $7$ times the digits at unit place, then the number is

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $70$

  2. $71$

  3. $17$

  4. $78$

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Correct Option: A

$15$ years hence a men will be just $4$ times as old as he was $15$ years ago. His present age is _________ years

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $25$

  2. $20$

  3. $15$

  4. $30$

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Correct Option: A

If the sum and the product of the digits of two digit number is the same, then the number is_____________

maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

  1. $11$

  2. $23$

  3. $10$

  4. $22$

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Correct Option: A