Question

the product of two successive multiples of 10 is 1200 then find these multiples plz question the answer​

Answer 1

Answer:

30,40

Step-by-step explanation:

the multiples means the outcomes of the table 10 !

so 10×3=30

10*4=40

30*40=1200

Answer 2

Answer:

let the 1st multiple of 10 be = x

let the successive multiple of 10x be = x+10

therefore, the equation would be like :-

x(x+10) = 1200

=> x²+10x = 1200

=> x² + 10x -1200 = 0

=> x² +40x-30x-1200 = 0

=> x(x+40) -30(x+40) = 0

=> (x-30)(x+40) = 0

=> (x-30) = 0

=> x = 30 ----> (1)

and,

=> (x+40) = 0

=> x = -40 ----> (2)

by verifying 1 and 2 with the equation

(1):-

x=30

x+10 = 40

therefore, 30×40 = 1200

hence verified.

(2):-

x=(-40)

x+10 = (-30)

therefore, (-40)(-30) = 1200

hence verified.

So, both 1 and 2 are correct.

ANSWERS :- i) both 30 and 40

ii) and -40 and -30

Hope it helped :)