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Tomtit [17]
3 years ago
15

a number with 2 consecutive natural digits, how many units will it increase if written in reverse order. Detail solution pls

Mathematics
1 answer:
svetlana [45]3 years ago
5 0

Answer:

It will increase by 9 units.

Step-by-step explanation:

We can write the lowest number as  10a + (a + 1) and the highest is the reverse which is 10(a + 1) + a.

Subtracting:

10(a + 1) + a - (10a + a +1)

= 10a + 10 + a - 10a - a - 1

= 10a - 10a + a - a + 10 - 1

= 10 - 1

= 9.

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Considering the situation described, the classification of the runners is given as follows:

Dan - Ben - Alex - Curtis.

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The oldest came in second place. Ben is older than Alex, and Curtis is older than Dan, hence either Ben or Curtis finished second.

Alex ran the distance faster than Curtis, and Dan ran faster than Ben and Curtis, hence considering the above observation Ben finished second and the classification is:

Dan - Ben - Alex - Curtis.

A similar problem, in which a situation is interpreted, is given at brainly.com/question/5660603

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A plumber has a 2.5 meter long copper pipe. He needs to cut lengths of 60cm,35cm and 90cmWork out how much of the initial 2.5 me
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Answer:

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Step-by-step explanation:

Remember that

1\ m=100\ cm

step 1

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To find out how much of the initial long pipe is left, subtract the lengths of 60 cm, 35 cm and 90 cm from the initial long pipe

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