Answer:
49
Step-by-step explanation:
44100/900=49
The ratio of the area of ABCD to the area of EFGH is 3:1
Answer:
$63
Step-by-step explanation:
The full price of the tank is $90 which is also 100% of the price.
Since the sale is 30% off, and 100% - 30% = 70%, the sale price is 70% of the original price.
70% of $90 = 0.7 × $90 = $63
4a + 7b = 38 -> (1)
9a + 7b = 68 -> (2)
Subtract (1) from (2),
9a - 4a + 7b - 7b = 68 - 38
5a = 30
a = 6