Question

Jared invested some money in a company's stock. Luckily for Jared, the company became very popular and the value of Jared's investment this morning is 7 times as large as the value of his investment yesterday morning.

a. The value of Donald's investment this morning is what percent of the value of his investment yesterday morning?
b. By what percent did the value of Donald's investment change by from yesterday morning to this morning?

Answer 1

Explanation:

Given that Jared invested some money in a company's stock. Luckily for Jared, the company became very popular and the value of Jared's investment this morning is 7 times as large as the value of his investment yesterday morning.

a) Suppose Jared invested amount P

Today its value is 7P

i.e. 700% of yesterday value is value of Donald's investment this morning

b) Increase in value in one day from yesterday to today = 6 times P

i.e. increase in percent = 600%

Change in investment = +600%