Question

Q: The sum of three consecutive multiples of 3 is 72. What is the second largest number ?

Answer 1

Answer:

second largest number is 24

Step-by-step explanation:

x+(x+3)+(x+6)=72

3x+9=72

3x=63

x=21

x+3 is second largest number

21+3 =24

Answer 2

Answer:

The second largest number among the three is 24.

Step-by-step explanation:

Sum of three consecutive multiples of 3 is 72.

The second largest number among the three = ??

Let the numbers be -

• Smallest number = y
• Second largest number = y + 3
• Largest number = (y + 3) + 3

$\longrightarrow$ y + (y + 3) + (y + 3 + 3) = 72

$\longrightarrow$ 3y + 9 = 72

$\longrightarrow$ 3y = 72 - 9

$\longrightarrow$ 3y = 63

$\longrightarrow$ y = 63/3

$\longrightarrow$ y = 21

Smallest number = 21

____________________________

★ Second largest number among the three,

$\longrightarrow$ 21 + 3

$\longrightarrow$ 24

Therefore, the second largest number among the three is 24.