Need on doing the work to figure out how music hour she took

D 1/27 hour per question

Step-by-step explanation:

She answered 9 questions

She took 1/3 of an hour total

We want to find time per question

1/3 ÷ 9

Copy dot flip

1/3 * 1/9

1/27 hour per question

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: