Question

5. The price of a shirt was decreased from 1200
to 800. What was the percentage decrease in
the price?
6. If the decrease in the price of an article is 14%,
that is, *280, what is the old price of the article?
7. The percentage of hydrogen in a mixture was
increased by 25% to 150 mL. What was the
original amount of hydrogen in the mixture?
8. If a is 20% more than b, find the following:
(i) : b (ii) a: a+b (iii) a-bia
9. The height of a boy was 144 cm. By mistake.
it was measured as 144.3 mm. Find the error
percent​

Answer 1

Answer:

Step-by-step explanation:

1200-800=400

Decrease %=decreased price ÷original price ×100

400÷1200×100=33.33%

Answer 2

Answer:

ggggggvv

Step-by-step explanation:

in which school are you