Jim bought x iphones for seven coupons each and sold y android phones for 4 coupons each. He got 20 coupons.
Julia bought the same number iphones for 3 coupons each and bought the same number Android phones for 4 coupons each. She got 20 coupons too. Please find quantity of iphones they will get and quantity of Android phones sold by Jim and got by Julia
{7x-4y=20
+
{3x+4y=20
10x=40
x=4
28-4y=20
4y=8
y=2
Answer
x=4; y=2
Jim and Julia bought 8 iphones and Jim sold 2 Android phones. Julia bought 2 Android phones.
If one brother is 31 and the other is 30, it would equal 61 which is older than their father. This keeps the brothers one year apart. The answer would be 31
Answer:
\frac{9\sqrt{3}}{2}\approx 7.79 square units.
Step-by-step explanation:
Answer:
7.34
Step-by-step explanation: