Answer:
infinite solutions
Step-by-step explanation:
Answer:
Step-by-step explanation:
If 2 dvd’s cost $12, you take the total of $12 and divide by 2. Each dvd costs $6
Sally wants to buy some groceries. She wants to buy 2 kg of potatoes and 1 kg of onions. 1 kg of onions cost $5 but the paper that shows price of potatoes got lost. However, Sally remembers that few weeks ago she bought 3 kg of potatoes for $12. How much did Sally spent buying groceries?
Part 1:
First we need to find how much 1 kg of potatoes cost.
3*x = 12
x = 4
1 kg of potatoes cost $4
Part 2:
Now we need to find how much did she spent.
M = 4*2 + 1*5 = $13.
We can solve this in 2 ways
Since a1 = 4
a2 = 4 * (3) = 12 i.e( a1* common ratio)
a3 = 12 * (3) = 36 i.e( a2 * common ratio)
a4 = 36 * (3) = 108 i.e( a3* common ratio)
a5 = 108 * (3) = 324 i.e(a4*common ratio)
and so on