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6. A number when divided by a divisor leaves a remainder of
15. When twice the original number is divided by the same
divisor, the remainder is 8. What is the value of the divisor?
a) 17
b)18
c) 20
d) 22


Sagot :

Answer:

To solve this problem, we need to find the value of the divisor.

Given information:

- When the original number is divided by the divisor, the remainder is 15.

- When twice the original number is divided by the same divisor, the remainder is 8.

Let's represent the original number as 'x' and the divisor as 'd'.

Step 1: Set up the equations based on the given information.

Original number divided by divisor leaves a remainder of 15:

x = d × q + 15, where q is the quotient.

Twice the original number divided by the same divisor leaves a remainder of 8:

2x = d × p + 8, where p is the quotient.

Step 2: Solve for the divisor 'd'.

From the first equation, we can express the original number 'x' in terms of the divisor 'd':

x = d × q + 15

Substituting this into the second equation:

2x = 2(d × q + 15) = d × (2q) + 30 = d × p + 8

Equating the coefficients of 'd':

2q = p

2q - p = 0

p = 2q

Substituting p = 2q into the second equation:

2(d × q + 15) = d × (2q) + 8

2dq + 30 = 2dq + 8

22 = 22

d = 22

Therefore, the value of the divisor is 22.

The correct answer is d) 22.