#### If two numbers are divisible by a number,

#### their sum is also divisible by the number

**
16 & 20 is divisible by 4
**

Sum = 16 + 20 = 36

∴ 36 is also divisible by 4

**
36
**
**
&
**
**
78 are
**
**
divisible by
**
**
6
**

Sum = 36 + 78 = 114

∴ 114 is also divisible by 6

**
100 & 25 are divisible by 5
**

Sum = 100 + 25 = 125

∴ 125 is also divisible by 5