Answer:
25.
Step-by-step explanation:
We can write the expression as 10x + 2.5x where x is the tens digit.
So reversed we have 25x + x.
- and 25x + x - (10x + 2.5x) = 27
22.5x - 9x = 27
13.5x = 27
x = 2 and 2.5x = 5.
So the number is 25.
Answer:
a= 18 girls in the class, b= 20 boys and 15 girls, 12 oranges better price.
Step-by-step explanation:
for question a, there are 18 girls in the class, this is how i worked it out:
the ratio of boys to girls is 4:3.
there are 24 boys.
24 is 6 times more than 4.
if boys are 6 times more than the original ratio, we also have to times the amount of girls by 6.
6x3= 18.
for question b i got 20 boys and 15 girls, this is how i did it.
there are 35 students in total.
4:3= boys to girls.
4+3=7
7 goes into 35 five times.
ratio of boys to girls is 4:3 so 5x4 for boys = 20 and 3x5 for girls = 15.
answer= 20 boys and 15 girls.
12 oranges is a better deal, this is how i worked it out.
it is 60 for 12 oranges.
it is 48 for 8 oranges.
12x5= 60 , 8x6=48.
you only have to times 12 by 5 to get it to the price but you have to times 8 by 6 to get it to the price, proving that 12 oranges for 60 is a better deal.
Answer:
D
Step-by-step explanation:
the pattern is x5 for y, +1 for x
Answer:
it's 20
Step-by-step explanation:
I just had the same question and I got it right it's 20.
