Question

if x is 30 percent more than y find y+x / x​

Answer 1

Answer:

Let y = a

Then x = a × (100 + 30)/100

= a × 130/100

= 13/10 a

Now, (i) x/y = (a/13)/10a

= (a × 10)/13a

= 10/13

(ii) (y + x)/x = (a + 13/10.a)/(13/10.a)

= (10 + 13)a/(10 × 13/10.a )

= 23a/10 × 10/13a = 23/13

(iii) y/(y – x) = a/(a – 13/10.a)

= (a/-3)/10.a

= (a × 10)/(-3a)

= -10/3

Step-by-step explanation:

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Answer 2

Answer:

Let y = a

Then x = `"a" xx (100 + 30)/100`

`= "a" xx 130/100 = 13/10 "a"`

Now, `"x"/"y" = "a"/(13/10 "a")`

`= ("a" xx 10)/"13 a" = 10/13`.