Percentages Challenging Exercise
1. In a month, Janet spends 64% of her salary and saves the rest. It is known that the savings is
$7 000 less than the expenditure in that month.
(a) How much is Janet's monthly salary?
I
(b) How much does she save in that month?
Explain 2. When a car is sold, the profit made is equal to 40% of the selling price of the car. Can we say
that the profit per cent is equal to 40%? Explain your answer.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

the answer is d

hope this