20.

In a triangle, the first angle is 15º more than the second angle. The third angle is 10˚ less than three times the second angle. Find the measure of each angle.

The second angle = xº

( Use x to express the first and the third angles.)

The first angle =

The third angle =

21.

The sale price of a free-weight home gym is $248, which is 20% off the regular price. Find the regular price. (Regular price – Discount = Sale price)

22.

The manager of a camera store uses a markup rate of 30 % . Find the cost of a camera selling for $299. (C + M= S )

23.

Five times the second of three consecutive even integers is six less than twice the sum of the first and third integers. Find the middle even integer.

The first even integer = n

(Use n to express the second and the third numbers.)

The second even integer =

The third even integer =

24.

A total of $9500 is deposited into simple interest accounts. On one account the annual simple interest rates is 10%; on the second account the annual simple interest is 11%. How much should be invested in the 11% account so that the total annual interest earned is $1005?

Principal

Rate

= Interest

@10%

.10

@11%

.11

Total

$9500

$1005