Question

40 * x + 50 * (x-1) = 220 in such a way that answer should be 3

Answer 1

Step-by-step explanation:

Given :-

40X + 50 (X-1) = 220

To find :-

The value of X .

Solution :-

Given equation is 40X + 50 (X-1) = 220

=> 40X + 50X - 50 = 220

=> (40 + 50) X - 50 = 220

=> 90X - 50 = 220

=> 90X = 220 + 50

=> 90X = 270

=> X = 270/90

=> X = 3

Therefore, X = 3

Answer :-

The value of X is 3

Check :-

If X = 3 then LHS of the given equation

40X + 50 (X-1)

= 40(3) + 50 (3-1)

= 120 + 50(2)

= 120 + 100

= 220

= RHS

=> LHS = RHS

LHS = RHS is true for X = 3

Hence, Verified the given relations in the given problem.

Answer 2

Step-by-step explanation:

=>40x + 50(x - 1) = 220

=>40x + 50x - 50 = 220

=>90x - 50 = 220

=>90x = 220 + 50

=>90x = 270

=>x = 270÷90

=>x = 3