Answer:
Step-by-step explanation:
Let the number of ounces of
A = x
B = y
A scientist has two solutions, which she has labeled Solution A and Solution Each contains salt. She knows that Solution A is 40% salt and Solution B is 55% salt. She wants to obtain 90 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?
Our system of equations is given as
x + y = 90.... Equation 1
x = 90 - y
40% × x + 55% × y = 45% × 90 ounces
0.4x + 0.55y = 40.5....Equation 2
We substitute 90 - y for x in Equation 2
Answer:
c
Step-by-step explanation:
no need to explain
hope it helps
Answer: 4.5%
Step-by-step explanation:
Percentage will be calculated as:
No of players with height below 74/ total number of players x 100
From the question, Only one player has height of below 74
Total number of heights recorded is from 22 players
% = 1/22 × 100
0.04545 x 100
= 4.5%
I hope this helps.
