Question

. A number added to its two-thirds is equal to 55. Find the number.
- As a number is decreased by 15 and the new number so obtained is multiplied by
get the result 81. Find the number.
A father is 30 years older than his son. In 12 years, the man will be three times​

Answer 1

Answer:

let the number be x

x+2/3= 55

x=55-2/3

take reciprocal of 2/3

so the answer is 3/2

so, x=55-3 upon 2

subtract 55-3

x=52 upon 2

reduce the 52 upon 2

so the answer is 26

if the number is decreased by 15

so, 26-15=11

if the new number is multiplied by 81

so, 11x81=891

(2) i can't understand what you type can you type it clearly

please mark me as brainliest for ans 1