Question

a dozen identical books are stacked one above the other to a height of 72cm. if 5books are more added to the stack, then height of the stack becomes 'h' cm. then find the sum of digit of h/3​

Answer 1

Answer:

The sum of the digits of h/3 is 7

Step-by-step explanation:

Number of books = 12

Total height of the stack = 72 cm

Height of one book = 72/12 = 6 cm

Height of five books = 5 × 6 = 30 cm

Total height of the stack = 72 + 30 = 102 cm

According to the question

h = 102 cm

Therefore,

h/3 = 102/3 cm

     = 34 cm

Sum of the digits of h/3 = 3 + 4 = 7

Hope the answer is helpful.