Answer:
- Dien - 15 seconds, Jane - 10 seconds
Step-by-step explanation:
<u>Together:</u>
- 2/3 of pizza ⇒ 4 seconds
- Full pizza ⇒ 4 ÷ 2/3 = 6 seconds
Dien needs x seconds to eat pizza
Jane needs x - 5 seconds to eat pizza
<u><em>In one second, Dien can eat 1/x, Jane can eat 1/(x - 5), together 1/6 of a pizza</em></u>
- 1/x + 1/(x - 5) = 1/6
- x(x - 5) = 6(x + x - 5)
- x² - 5x - 12x + 30 = 0
- x² - 17x + 30 = 0
- (x - 15)(x - 2) = 0
- x = 15 (x = 2 is discounted as not realistic)
Dien can eat a pizza in 15 seconds, Jane can eat a pizza in 10 seconds
100-99=1
98-97=1
...
4-3=1
2-1=1
Any number subtracted from a number greater than it by one will always have the result of 1.
Lets represent a tin of beans as 
and a jar of jam as 
.
Therefore
3b+4j=2080 and 5b=2000.
Now we can say that b=400.
Substitute b in 3b+4j=2080 for 400.
3*400+4j=2080
Simplify
1200+4j=2080
4j=880
j=220.
Therefore
1 tin of beans is 400 grams and 1 jar of jam is 220 grams.
Answer:
is say 50 or 52 % can i get brainly pls
Step-by-step explanation:
First or the second idk what the red filling is supposed to be...
