If two inlet pipes can fill a pool in one hour and 30 min Nd one pipe can fill pool in three hours on it's own how long would the other pipe take to fill the pool on it's own

66.666666667%

step-by-step explanation:

divide 150 by 100

divide 100 by 1.5

there you go!

decreased by 33.333333334%

3+3+3+2*2*2+29*12 = 365

step-by-step explanation:

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

i think the answer is b. i hope i !