Simple interest on rs 3500 at 10% per annum for a certain period is rs 400 made than the interest on rs 2500 at 10% per annum for the same period of time find the time

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8