Answer:
The two numbers are:
30 and 18
Step-by-step explanation:
a + b = 48
a - b = 12
From the first eq.
a = 48 - b
Replacing this last value in the second eq.
(48 - b) - b = 12
48 - 2b = 12
48 - 12 = 2b
36 = 2b
36/2 = b
18 = b
from the first eq.
a + 18 = 48
a = 48 - 18
a = 30
Check:
from the second eq.
a - b = 12
30 - 18 = 12
The boy would have 3 brothers and 3 sisters therefore in the family there would be 4 boys and 3 girls
Answer:
Step-by-step explanation:
Answer:
Discounted amount = $10
Sales price = $40
Step-by-step explanation:
Given:
Phone cost = $50
Discount rate = 20%
Find:
Discounted amount and sales price
Computation:
Discounted amount = Phone cost x Discount rate
Discounted amount = 50 x 20%
Discounted amount = $10
Sales price = Phone cost - Discounted amount
Sales price = $50 - $10
Sales price = $40
