Question

*In a two-digit number, the digit in the unit's place is 5 more than the digit in the ten's place. If the sum of the digits is 9, what will be three times the ten's digit?*

1️⃣ 72
2️⃣ 27
3️⃣ 6
4️⃣ 21​

Answer 1

If b be the digit at unit place then digit at ten's place =b+3

Therefore number =(b+3)×10+b

=10b+30+b

=11b+30

Step-by-step explanation:

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