Postal or Sorting Assistants Model Paper 4 With Solutions

Question : 16 of 100

Marks: +1, -0

80% of a number is equal to three-fifth of another number. What is the ratio between the first and the second number respectively?

Solution:

(a) Let the first number be x
and the second number be y
Then, 80% of

x = 3/5

of y
⇒

80/100×x=3/5×y

⇒

4/5×x=3/5×y

⇒

4x=3y

⇒

x/y=3/4=3:4

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