Question

in a two digit number, the unit digit is 4 less than the tens digit. the original number is 7 less than 8 times the sum of digit find the three times of the number.​

Answer 1

Answer:

A 22 digit number is written in the form dtens digitdones digit∣dtens digit>0dtens digitdones digit∣dtens digit>0 meaning dtens digit×101+dones digit×100dtens digit×101+dones digit×100 now your condition is that dones digit=dtens digit−4dones digit=dtens digit−4

So dtens digit≥4dtens digit≥4 for dones digitdones digit to be valid. So the numbers are:

40,51,62,73,8440,51,62,73,84 and 9595.

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Irish Irojo

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Sandeep Vijay

, works at Cipla

Answered 4 years ago · Author has 264 answers and 666.3K answer views

Answer 2

Answer:

28

Step-by-step explanation:

number =y×10+x

x=4(y)....(1)

y+x=10...(2)

y+4y=10

5y=4y=10⇒y=2

x=8

Number =20+8=28

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