Answer:
42
Step-by-step explanation:
Given:-
The Sum of the Digit of a Two Digit number is 6.
On reversing, the number is 18 less than the original number.
To Find:-
The original Number.
Let the Ones digit be "x"
ten's digit be = (6 - x)
Original Number = x + 10(6 - x) = 60 - 9x
Now, Atq.
One's Digit = (6 - x)
Ten's digit = x
New Number = 10 × x + (6 - x) = 9x + 6.
So,
(New Number) - (Original Number) = 18
(9x + 6 ) - (60- 9x) = 18
9x + 6 - 60 + 9x = 18
18x - 54 = 18
18x = 18 + 54.
18x = 72
x = 72/18
x = 4.
Therefore,
One's Digit = x = 4
Ten's digit = 6 - x = 2
Original Number = 42
Answer:
See below (I hope this helps!)
Step-by-step explanation:
Let's call the number of $8, $10 and $12 as x, y and z respectively. Then, we can write the following system:
x + y + z = 360 (1)
8x + 10y + 12z = 3500 (2)
x + y = 5z (3)
5z + z = 360 (Substitute (3) into (1))
6z = 360
z = 60
x + y = 5 * 60 (Substitute z = 60 into (3))
x + y = 300 (4)
8x + 10y + 12 * 60 = 3500 (Substitute z = 60 into (2))
8x + 10y = 2780 (5)
8x + 8y = 2400 (6) -- (Multiply (4) by 8)
2y = 380 (Subtract (6) from (5))
y = 190
x + 190 = 300 (Substitute y = 190 into (4))
x = 110
Answer: Jazz and heavy Metal
Step-by-step explanation:
Answer:
2.5 times 60 equals 150. 150-78 equals 72. So the answer is 72.
Step-by-step explanation:
Hope this helps.
Answer:
$4.20
Step-by-step explanation:
y = .05x (using stat on calculator)
y = .05(84)
$4.20