Question

If a number is divisible by 5 but not divisible by 10, and a factor of the number is 7 , the number is greater than 100 but less than 200, what is the number? How many number is need to add if the number will be divisible by 5 and 10?

Answer 1

Answer:

105 or 175

Step-by-step explanation:

Number is divisible by 7 and 5 and not an even will be in the format of 35n

Between 100 and 200:

• 35*3=105
• 35*5=175

If we add 5 to both numbers, they will be divisible by both 5 and 10.

Answer 2

Step-by-step explanation:

LCM of 5 and 7 = 35

=> The required number is an odd multiple of 35

between 100 and 200 .

( I said odd multiple becouse it's not divisible by10)

1st number = 105

2nd number= 175

When 5 is added the number is then divisible

by 5 and 10 both.

=> only one number should be added ie 5

Hope this is helpful for you.