Muhum hum....
<span>Let
Sally's age = s
Tomas's age = t
The sum of sally's age plus twice tomas's age is 12
s+2t=12...........(1)
The difference of sally's age and tomas' is 3.
s-t=3
s=3+t.........(2)
Put the value of s from (2) to (1)
s+2t=12...........(1)
3+t+2t=12
3t=12-3
3t=9
t=9/3
t=3
Put the value of t in (2)
s=3+t
s=3+3
s=6
Sally's age = s = 6
Tomas's age = t = 3
</span>
The length is 38 meters and the width is 16 meters.
Answer:
$20.60
Step-by-step explanation:
Price before discount = $21
Discount rate = 10% or 0.1
Discount in dollars = 0.1* 21 = $2.1
Price after discount = $21 -$2.1 = <em>$18.90</em>
If sales tax is 9% or 0.09
amount of tax will be = 0.09 * 18.90 = <em>$1.701</em>
Total price of the phone including taxes = Price before tax + tax amount;
Total price = 18.90 +1.701
= 20.601
Therefore total price will be $20.60
Car A: 18/20(60)=54 mph
Car B: 13/12(60) = 65 mph
So car b travels 11 more miles than car a in one hour
