Number Two or B would be correct
Answer: 18 people per minute
Step-by-step explanation: 162 divide by 9 equals 18
the answer to 2x2 is 4 so 2 x 2= 4
Answer:
70
Step-by-step explanation:
round 340 to 350 because 5 goes into 35,
7 times
then add the 0 to the end.
350 ÷ 5 = 70
Answer: Alvin = 42 yrs , Elga = 21 yrs
Step-by-step explanation:
Let Elga's age be x , and Alvin's age be y ,since Alvin is two times Elga's age , then
Alvin's age = 2x , that is
y = 2x ............... equation 1
The sum of their ages is 63 implies
x + y = 63 .............. equation 2
Solving the resulting linear equations by substitution method.
Substitute equation 1 into equation 2 , we have
x + 2x = 63
3x = 63
x = 63/3
x = 21
Therefore : Elga is 21 years old , then Alvin will be 21 x 2, which will be 42
