RRB Non Technical Model Papers 9 with solutions

Question : 24 of 100

Marks: +1, -0

If 70% of a number is equal to three fifth of another number. What is the ratio between the first number and the second number respectively ?

Solution:

(4) Let the 1st no. = x
and 2nd no. = y
∴ From question,

70% of x =3/5of y

⇒{70x}/100 ={3y}/5⇒{7x}/10={3y}/5

∴x/y =3/5×10/7 =67

∴ x : y = 6 : 7

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