Question

5. Imagine some coloured blocks are laid out in a row: three red, two blue, three red, two blue and so on. If there are 65 coloured blocks, how many would be red?

a) 52

b) 39

c) 26

d) 13

Answer 1

Answer:

The answer would be b) 39

Answer 2

Given :  coloured blocks are laid out in a row: three red, two blue, three red, two blue and so on

there are 65 coloured blocks

To Find :  how many would be red

Solution:

Red = 3

Blue = 2

Total = 5

Hence for every 5 there are 3 Red

For total 5 , numbers of Red  = 3

=> For total 1 , numbers of Red  = 3/5

=> For total 65 , numbers of Red  = 65 * 3/5  = 39

There are 39 Red Blocks

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