Question

the sum of two consicutive multiple of 5 is 65 find the nunber​

Answer 1

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Question

The sum of two consecutive multiples of 5 is 55. Find these multiples. [4 MARKS]

Solution

Forming the equation : 1 Mark

Steps : 2 Marks

Result : 1 Mark

Let the first multiple of 5 be

x

.

Then the other multiple of 5 will be

x

+

5

and their sum

=

55

.

Therefore,

x

+

x

+

5

=

55

⇒

2

x

+

5

=

55

⇒

2

x

=

55

−

5

⇒

2

x

=

50

⇒

x

=

50

2

⇒=

25

Therefore, the multiples of 5, i.e.,

x

+

5

=

25

+

5

=

30

Therefore, the two consecutive multiples of 5 whose sum is 55 are 25 and 30.