Answer:
300
Step-by-step explanation:
40% = 0.40
420/1.4 = 300
To check:
300 * 0.40 = 120
120 + 300 = 420
Let x represent the original number.
Then the number plus a 40% increase comes out to 1.40n.
This 1.40n = 420. Solve this for n:
n = 420/1.40 = 300
the unknown (original) number was 300.
20 feet high
Do the work
p = 21.312
Divide 2.4 on both sides.
Hope this helped!
let x be the length of third side.
10-5<x<10+5
or 5<x<15
so third side is between 5 and 15 .
