Height and Percentage Problems

The video tutorial covers three math problems involving percentages and algebra. First, it calculates Val's score in a video game by determining 30% fewer points than Peta's score. Next, it solves a problem involving goblins and wizards using algebra to find the number of goblins. Finally, it calculates Cody's height from last year, given that he is 10% taller this year.

If Peta scored 1060 points, how many points did Val score if Val scored 30% fewer points?

• 742 points

• 318 points

• 7420 points

• 1060 points

What is the percentage of Peta's score that Val scored?

• 100%

• 30%

• 70%

• 50%

Tags

CCSS.6.RP.A.3C

In a magic club, if there are 20% more goblins than wizards and the total number of goblins and wizards is 220, how many goblins are there?

• 220 goblins

• 120 goblins

• 200 goblins

• 100 goblins

Tags

CCSS.6.RP.A.3B

If there are 100 wizards in the club, how many goblins are there?

• 120 goblins

• 100 goblins

• 140 goblins

• 80 goblins

What equation represents the relationship between goblins and wizards if there are 20% more goblins?

• G = W + 20

• G = 0.8W

• G = 1.2W

• G = W - 20

Tags

CCSS.6.RP.A.3C

Cody is 165 cm tall this year, which is 10% taller than last year. How tall was he last year?

• 135 cm

• 180 cm

• 165 cm

• 150 cm

Tags

CCSS.6.RP.A.3C

If Cody's height increased by 10% this year, what was his height last year?

• 175 cm

• 155 cm

• 165 cm

• 150 cm

Tags

CCSS.6.RP.A.3C

What is the percentage increase in Cody's height from last year to this year?

• 15%

• 20%

• 5%

• 10%

Tags

CCSS.2.MD.A.3

If Cody's height last year was 150 cm, what is his height this year?

• 165 cm

• 135 cm

• 180 cm

• 150 cm

Tags

CCSS.6.RP.A.3C

How do you calculate the height of Cody last year if his current height is 165 cm and he grew by 10%?

• Subtract 10 from 165

• Divide 165 by 1.1

• Add 10 to 165

• Multiply 165 by 1.1

Tags

CCSS.6.RP.A.3C