Question

find a number twice whose value is equal to 15 more than half its value

Answer 1

let no. be x
ATQ,
2x = 15+ x/2
2x = 30+x /2
4x = 30+ x
3x = 30
x = 10
the number is 10

Answer 2

Answer must be 130 as this is only the number whose twice value is equal to 15 more than half its value