Question

the mean of 5 number is 11 the numbers are i the ratio 1:2:3:4:5 find the smallest number​

Answer 1

If the mean is 11 and there are 5 numbers then their sum is

5

×

11

=

55

We have the ratio of parts being

a

:

b

:

c

:

d

:

e

→

1

:

2

:

3

:

4

:

5

so the total count of parts is

1

+

2

+

3

+

4

+

5

=

15

⇒

a

→

1

15

×

55

=

55

15

≡

55

÷

5

15

÷

5

≡

11

3

=

3

2

3