Exam 4: Solving for the Unknown

What number decreased by 630 equals 1,510?

Jane weighs 12 pounds less than Shelley. Assuming Jane weighs 120 pounds, find Shelley's weight.

Jerry's age 10 years ago can be expressed as:

No number in front of a letter is really a 1.

Jim Murray and Al Sming sold a total of 600 camcorders. Jim sold 5 times as many camcorders as Al. How many did each sell?

Jarvis Co. sells thermometers ($3) and hot water bottles ($7). If total sales were $760 and customers bought 4 times as many thermometers as hot water bottles, what would be the number of each sold? (Let B = number of hot water bottles.)

Solve for the unknown, showing all work. (If necessary, round to the nearest hundredth.) 6B - 80 = 160

N/8 + 6 = 58; N equals:

2(V- 8) = 90; V = 53.

A times C is represented by:

Over the past month, 900 trucks were sold. Abe sold 4 times as many as Joe. How many did each sell? A. ____________ Abe B. ____________ Joe

5A - 10 = 90

Solve for the unknown, showing all work. (If necessary, round to the nearest hundredth.) 7 (A - 4) = 21

10A - 20 = 4A + 80 (answer to closest hundredth).

Marvin Co. sells pens ($6) and flashlights ($10). If total sales were $624 and customers bought 7 times as many pens as flashlights, what would be the number of pens sold?

Moe is 6 times Al's age. If the difference in their ages is 20, how old is Moe?

One day Marika Company produced 6 times as many wood stoves as Barry Company. If the difference in their production is 15, how many stoves did Barry produce that day?

1/5 of all sales were for cash. If cash sales were $4,000, what were total sales?

The Rand Co. produces 11 times as many rings on shift 1 as on shift 2. If a total of 12,000 rings were produced, how many were produced on each shift?

Mick and Mack went to a supermarket and bought boxes of soap detergent. Mack could buy only four boxes, which was 1/5 as much as Mick. How many boxes did Mick buy?