There are 43 nickels in the piggy bank.
Step-by-step explanation:
Given,
Amount in piggy bank = $6.95 = 6.95*100 = 695 cents
Total coins = 91
One nickel = 5 cents
One dime = 10 cents
Let,
x be the number of nickels
y be the number of dimes
According to given statement;
x+y=91 Eqn 1
5x+10y=695 Eqn 2
Multiplying Eqn 1 by 10
Subtracting Eqn 2 from Eqn 3
Dividing both sides by 5
There are 43 nickels in the piggy bank.
Keywords: linear equation, elimination method
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Answer:
y km = (x+2)y km
Step-by-step explanation:
Given that,
A car covers (x+2) kilometre in 1 litre.
We need to find the distance it will cover in y litres.
1 litre = (x+2) km
y km = (x+2)y km
Hence, it will cover (x+2)y km in y litres.
Answer: answer is 2
Step-by-step explanation:
Answer:
$15
Step-by-step explanation:
First you move the decimal in the percent 2 times to the left and get .25. And then you multiply that by 60 and get 15.
4 days
donvert 3 and 1/3 to imporopoer
3 and 1/3=3+1/3=9/3+1/3=10/3
divide 10/3 by 4
remember that divide by 4 means multiply by 1/4
10/3 times 1/4=10/12=5/6
each day spends 5/6 hour (about 50 mins)