Answer:
10 pounds
Step-by-step explanation:
Let x represent the amount of raisins Meg have in her supply. She uses 1/2 of her supply of raisins to make trail mix and 3/10 of her supply of raisins to make cookies which gives a total of 8 pounds of raisins being used. To find the amount of raisins she has in her supply, we use the equation:
(1/2)x + (3/10)x = 8
multiply through by 20:
(1/2)x * 20 + (3/10)x * 20 = 8 * 20
10x + 6x = 160
16x = 160
Divide both sides of the equation by 16:
16x/16 = 160/16
x = 10 pounds
Therefore she have 10 pounds of raisins in her supply
I believe it's 2110. Because you have to multiply the numbers and then add the 2 numbers to get the final number. So 7 times 3 is 21
7 + 3 is 10
So I got 2110.
Answer:
17 and 53.
Step-by-step explanation:
Let the two unknown numbers be x and y respectively.
Translating the word problem into an algebraic expression, we have;
x + y = 70 ...... equation 1
x - y = 36 ...... equation 2
From equation 1;
x = 70 - y ...... equation 3
Substituting eqn 3 into eqn 2, we have;
70 - y - y = 36
70 - 2y = 36
70 - 36 = 2y
2y = 34
y = 17
Next, we find x;
x = 70 - y
x = 70 - 17
x = 53
