Question

40% числа d равны 2,49, найдите число d

Answer 1

0,4-2,49
1-d

d=2,49/0,4=6,225

Answer 2

$frac{x}{2.49} = frac{100% }{40%}$
$2.49 times 100 = 40x$
$x = 6.225$