Question

Yx1+Yx2+Yx3+....+Yx100=12625

Answer 1

Y x 1 + Y x 2 + Y x 3 + ... + Y x 100 = 12625

Y x (1+2+3+...+100) = 12625

Y x (100+1) x (100:2) = 12625

Y x (101 x 50) = 12625

Y x 5050 = 12625

Y= 12625 : 5050

Y= 2,5