Question

40% of a number when sub-tracted from the
number gives 30. What is that number?​

Answer 1

Answer:

i think answer is 50

am i correct

Answer 2

The number which it's 40% subtracted from the number gives 30 is 50

◆Let the number be 'x ',

40% of the number is (40/100 )× x = 0.4x.

◆Let's derive a LINEAR EQUATION with the given data. Solving this equation gives you the VALUE OF x.

◆0.4x subtracted from be x itself gives 30.

◆The equation is,

x - 0.4x = 30

x(1-0.4) = 30

◆Solving , this equation

0.6x =30

◆x =30/0.6=300/6 = 50.

◆Hence the solution.