Question

http://prntscr.com/509eg2

Answer 1

you just have to identify which is 15% or 0.15 from the choices of fractions
let's say for the the first option, 8.50 is multiplied by 3/20.. convert 3/20 to decimal.. what could be its decimal equivalent?

Answer 2

15% of 8.5 is 1.275

1.275 + 8.5 = 9.775.

So the cost after the raise is $9.775

Now you just have to find out which option equals 9.775.

Answer 3

@shinalcantara I don't think that's right..I think it want's the price after the raise..not the raise price..(1.275).

Answer 4

I think the answer is C because:

\(8.5 \cdot \dfrac{23}{20} = 9.775\)

Answer 5

it doesn't make sense though.
the expression would have been in geometric progression
\[A_n = 8.50r^{n-1}\]
\[A_n = 8.50(0.15)^{n-1}\]

Answer 6

Me too.

Answer 7

*awkward*

Answer 8

xD