The observed average time in a direct time study was 2.40 min for a repetitive work cycle. the worker’s performance was rated at 110% on all cycles. the personal time, fatigue, and delay allowance for this work is 12%. determine (a) the normal time and (b) the standard time for the cycle.

rotated. i took the test

step-by-step explanation:

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

i think the answer is d im not sure