Conventional Approach VS Our Revolutionary Approach

(DS Question 1)

A clinical trial, conducted at hospital Z in Virginia, aimed to test the efficacy of drug X in the treatment of arthritis patients who had not seen any improvement using existing drugs. The hospital reported that, of the participants with arthritis, 60 percent showed improvement, while 55 percent experienced the side-effect of an increased heart rate. What percent of participants in this clinical trial experienced neither any side effects nor any improvement?1) Hospital Z announced that 40 percent of the participants who showed improvement experienced the side-effect of an increased heart rate.

2) Hospital Z announced that 31 percent of clinical trial participants showed no improvement and experienced the side-effect of a raised heart rate.

(DS Question 2)

Company K is running the biggest coffee business in America. As seen in the image above , company K has 4 offices, one in each town of W, X, Y, and Z.
A coffee bean farm is in town W, and a processing factory for the beans is in town X. In town Y, there is a distribution center responsible for supplying the processed beans nationwide.
The headquarters of company K is located in town Z. The CEO of company K always visits all four towns in the order of W to X to Y to Z to W every day.
Given that the distances from W to X, X to Y, Y to Z, and Z to W are all equal,
what is the overall distance the CEO travels in one day?

1) The straight distance between X to Z is 8 miles.

2) The straight distance between W to Y is 6 miles.

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(PS Question 1)

x is m percent of y, and z is k percent of y. If mk ≠ 0, what percent is x of z in terms of m and k?A. 100km

B. 100/km

C. 100m/k

D. 100k/m

E. km/100

(PS Question 2)

A garden shop cultivates only roses and tulips. Last year, they cultivated 2/3 as many roses as tulips. Cultivating one rose plant took 5/6 of the time taken to cultivate one tulip plant. What fraction of the total time spent on cultivating both roses and tulips last year was devoted to cultivating only the tulips?

A. 9/14

B. 6/14

C. 2/3

D. 3/2

E. 5/9