thought of a two-digit number. The unit digit of my number is 7 more than the tens digit cubed. What is my number

Given:

In a two digit number, the unit digit of my number is 7 more than the tens digit cubed.

To find:

The two digit number.

Solution:

Possible digits for ones places are 0,1,2,3,4,5,6,7,8,9.

Zero cannot be on tens places.

Possible digits for tens places are 1,2,3,4,5,6,7,8,9.

If digit on tens place is 1, then digit on ones place is

So, the required number is 18.

If digit on tens place is 2, then digit on ones place is

It cannot be possible because 15 is not a digit it is a two digit number.

Similarly, other numbers except 1 on the tens place are not possible.

Therefore, the required number is 18.

huh? im pretty sure it is in 199

step-by-step explanation:

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

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