Question

please friend solve the two questions right with detile becaide i want to understant how o make it.

Answer 1

1 (b) option
Because we get 2:3 when we divide 10 by 15
In option a when we divide 8by 12 we get 2/3 which is equal as 2:3

Answer 2

the trick to solve this question is form an equation in the terms of variables given in the question.

in the first question it is given if U is 10 V has to be 15.
implies u ratio v is 10 ratio 15 or 2 ratio 3.
just check in the options which two numbers are not in this ratio. the answer is the third part which is 15 and 20. they are in the ratio of 3 is to 4 not to is 2 ratio 3.

second part is tricky due to the word inverse.
this means the greater the value of x the smaller the value of y.
in this type x*y is a constant.
so 10 x 60.
in the options given ,only the last part which is 45 and 1.3 do not match as 45 x 1.3 is equal to
45 + 13.5 which gives the answer to be 58.5 which is close to 60 but not exactly 60 show the option is d 45 and 1.3.

hope you are clear with the answer