The sum of three numbers is $98 .$ If the ratio between first and second be $2: 3$ and between second and third be $5: 8,$ then the second number is
$30$
$20$
$58$
$48$
A batsman, in his $12^{th}$ innings, makes a score of $63$ runs and thereby increases his average score by $2.$ The average of his score after $12^{th}$ innings is
The average of $6$ numbers is $3.95.$ The average of two of them is $3.4,$ while the average of the other two is $3.85 .$ What is the average of the remaining two numbers ?
The average temperature from Monday to Thursday is $48^{\circ} C$ and from Tuesday to Friday is $52^{\circ} C$. If the temperature on Monday is $42^{\circ} C$, what was it on Friday? (in $^{\circ} C$)
The average age of $35$ students in a class is $16\, years.$ The average age of $21$ students is $14$ What is the average age of remaining $14$ students ?(in $years$)
The average of six numbers is $20 .$ If one number is removed, the average becomes $15 .$ What is the number removed ?