Question

1. ) The sum of two, 2-digit numbers is 25 and their difference is 1. The two numbers are
a) 10, 15
b) 16,9
c) 12, 13
d) 14, 11​

Answer 1

Answer:

Option(c)

Step-by-step explanation:

Let the smaller number be x.

Given that their difference is 1.

The other number is 1 more than x, so it is (x + 1).

Sum of two numbers is 25.

⇒ x + x + 1 = 25

⇒ 2x + 1 = 25

⇒ 2x = 24

⇒ x = 12

So, the smaller number is 12.

The other number is 12 + 1 = 13

Therefore, the two numbers are 12 and 13.

Hope it helps!

Answer 2

Answer:

C)

Step-by-step explanation:

Let the first no be - x

Let second no. Be - x+1

.

.

.

Total no. =25

.

.

.

Therefore,

.

X +x+1 = 25

2x+1 = 25

X = 12

.

.

.

Second no. = x+1

= 12 +1

=13