Which of the following numbers is divisible by 24 ? (A) 13,944 (B) 15,746 (C) 15,966 (D) 16,012 (E) none of the above

Only A is divisible by 24.

Step-by-step explanation:

A number is divisible by 24 if it's divisible by both 3 and 8.

Numbers are divisible by 3 if all their digits add to a multiple of 3, and numbers are divisible by 8 if the last 3 digits are divisible by 8.

Let's look at A, 13944. The numbers add up to , which is divisible by 3.

944 is divisible by 8, and it makes 118.

So A works.

B is 15746.

, so this won't work as 23 isn't divisible by 3.

C is 15966.

, so this works for 3 but let's check 8.

so it's not divisible by 8, therefore not divisible by 24.

D is 16012.

and 10 isn't divisible by 3, so it doesn't work.

Hope this helped!

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this