maths
can any one help me
Answers
a) principal = 550$
rate = 2%
time = 1 year
in simple interest
interest - Principal × rate x time + 100 =
550x2x1 ÷100
1100÷100
interest is 11 $
after 10 years in simple interest
we multiply 11 x 10 year = 110$
amount after 10 years = 1100+110
1210 $
b) $ 663.90
Calculate the amount (A) using
A = P(1+r)t
where P is the principal, r is rate of interest and t is time in years
Here P = $550, r = then 1.9 100 = 0.019 and t = 10
A = 550 (1 +0.019) ¹0
= 550 (1.019) 10
$663.90
c) A = P(1 + r/n)nt
A= final value = $638.30
p= principal = $550
r = interest rate = x/100
n= number times compounded per year=1
t = time in years = 10
638.3= 550(1 + x/100)10
638.3/550 = (1 + x/100)10
Take the 10th root of both sides
10-√(638.3/550) = 1 + x/100
A scientific calculator using y√x gives:
1.0151+x/100
subtract 1 from both sides
0.015 = x/100
multiply both sides by 100
x = 1.5
The annual percentage rate is 1.5%
Check:
550(1+1.5/100)10 = 550(1.015)10 = $638.30
Answer matches and is correct.
Answer:
Easy ways to solve :
As we know That the x was given in fraction by 5 like this ➝ x/5
so to find x we can send 5 to the right side with 7 . like this ➝ x = 5×7
As we can see , numbers are on right side .
so lets solve ;
➝ x = 5×7
➝ x = 35
Step-by-step explanation: