The answer is the first choice, one cm represented 5 m in the first scale, but now 1 cm represents 4 m in the second scale.
Answer:
1) they will finish 11/30 of the homework in an hour
2) 1/6x + 1/5x = 1
i am not a 100% sure abt #2
Answer:
smallest amount of sugar = 40 kg
largest amount of sugar = 80 kg
Step-by-step explanation:
2 : 3 : 4
2 + 3 + 4 = 9
180 ÷ 9 = 20
Therefore,
2 : 3 : 4 = (2 x 20) : (3 x 20) : (4 x 20) = 40 : 60 : 80
So the smallest amount of sugar = 40 kg
and the largest amount of sugar = 80 kg
let's set up an equation
4x=24
solve normally:
x=6
so the expression is 4x=24 and she can have 6 kids in each group