In 1 group there is 5 boys and 7girls
total students in 1 group: 7+5=12 students
now we know that there 12 students in 1 group. thus, we find how many groups of 12 are in 384384 students.
number of groups: 384384÷12=32032 groups
in each group we know we have 5 boys, so,
you multiply 5
32032×5=160160 boys
therefore, there is 160160 boys.
3 gallons of acid = 100% concentration acid
? (water+acid) gallons = 15 concentration acid
Note: Every gallon of water added reduces the percentage concentration of acid. Therefore, the relationship is inverse proportionality.
Solution:
Total number of gallons (water+acid) = (3*100)/15 = 20 gallons
Therefore, gallons of water = 20-3 = 17 gallons
Answer:
12 kg
Step-by-step explanation:
15×80/100
15×8/10
120/10
12 kg
950 because 49 is closer to 9
Answer:
D
Step-by-step explanation: