Aclark types 18 letters for staff members in one day this is 60% of the total number of letters he writes the whole day how many letters does he type in one day?

30 letters in 1 day

Step-by-step explanation:

so 18 letters IS 60% OF the total letters

let x = total letters

" is " means = and " of " means multiply

turn ur percent to a decimal

so write ur equation like u read it...

18 = 0.60x now divide both sides by 0.60

18 / 0.60 = x

30 = x <=== he types 30 letters in 1 day

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

step-by-step explanation:

options