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4.Average
easy
The sum of three numbers is $98 .$ If the ratio between the first and second is $2: 3$ and that between the second and the third is $5: 8$ , then the second number is
A
$30$
B
$20$
C
$58$
D
$48$
Solution
Let the three no is $x, y, z$
$x: y \Rightarrow(2: 3) \times 5$
$y: z \Rightarrow(5: 8) \times 3 \Rightarrow x: y: z=10: 15: 24$
$Second \,\,\,\ numbery$ $=\frac{15}{49} \times 98=30$
Standard 13
Quantitative Aptitude