Mathematics
Grade6
Easy

Question

If the equivalent ratio of 3: a is 15:20, the value of a is _________.

  1. 4
  2. 5
  3. 6
  4. 2

hintHint:

First, we equate both the given ratios and then cross multiply them to obtain the value of a.

The correct answer is: 4


    Step 1 of 1:
    In the question, we were given two equivalent ratios and asked to find the value of a, we can do this by equating them and doing cross multiplication.
    Given equivalent ratios are 3:a and 15:20
    We can write them as follows
    3 over a equals 15 over 20
    a equals 3 cross times 20 over 15
    a = 4
    Final Answer:
    The right choice is-- a. 4

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