Answer:
65
Step-by-step explanation:
let the son's age be x then the man's age is 5x
In 13 years
son's age = x + 13 and man's age = 5x + 13 and he is 3 times as old as son
5x + 13 = 3(x + 13)
5x + 13 = 3x + 39 ( subtract 3x from both sides )
2x + 13 = 39 ( subtract 13 from both sides )
2x = 26 ( divide both sides by 2 )
x = 13 ← son's present age
5x = 5 × 13 = 65 ← man's present age
Answer:
C ≤ 11
Step-by-step explanation:
c − 5.5 + 5.5 ≤ 5.5 + 5.5
add 5.5 to both sides
Answer:
17.5
Step-by-step explanation:
3a = 15
a =5 .
3 x 5 = 15
2b = 5
15 + 5 = 20
----------------------------
b = 2.5
2.5 ( B ) + 15 ( 3a ) = 17.5
The answer is 20. 4 x 1/5 = 4 x 5. 4 x 5 = 20
