3.25 in dimes and nickels, were distributed among 45 boys. If each boy received one coin, how many received dimes?

20

Step-by-step explanation:

Given that: $3.25 in dimes and nickels were distributed among 45 boys.

1 nickel = $0.05

1 dime = $0.10

Let number of coins of dimes be x and the number of coins of nickel be 45-x.

Hence,

0.10x + 0.05(45-x)=3.25

0.10x+2.25-0.05x=3.25

0.05x=3.25-2.25

0.05x=1

x= 1/0.05

x=20

45-x

45-20=25

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