Answer:
false
Step-by-step explanation:
no solution
Answer:
✑ 
Let us consider , there are 30 boys and 40 girls in a school. So, the ratio of number of boys to number of girls = 
and read as 3 is to 4. We can say , the ratio compares two of more quantities of same unit. Until two quantities have same units , it is meaningless to compare by ratio. So, to find the ratio of two quantities , it is necessary to express them in same unit or of same kind. Since , they are in division form. So ,ratio is unit less quantity. Thus , the ratio is a comparison of two quantities of the same kind in division which doesn't have any units. For example : 
is a ratio and is read as ' a is to b ' in which ' a : is antecedent and ' b ' is called consequent.
✎ 
☪ 
£ 21 is to be divided between Amy and Ben in the ratio 5 : 2. So, let Amy get £ 5x and Ben get £ 2x.
Then , According to the question , 
Solve for x :
⇝ 
⇝ 
⇝ 
The value of x is 3. Now , substitute the value of x in 5x :
Amy received £ 5x = 5 × 3 = £ 15 .
☥ 
Hope I helped ! ツ
Have a wonderful day / night ♡
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Lauren spent $18. She put 1/3 of $45 ($15) in a savings account, then spent 3/5 of the remaining $30 ($18).
Answer:
89 miles per hour
Step-by-step explanation:
Let a and b be the respective rates in bricks per minute for Alex and Bob separately.
Alex lays 4 bricks per minute more than Bob
a = b + 4
Working together, their rates scale by 3/4 and they achieve 15 bricks per minutes.
(3/4)(a + b) = 15
Two equations, two unknowns, we solve:
b = a - 4
(3/4)(a + a - 4) = 15
2a - 4 = (4/3) 15 = 20
2a = 24
a = 12
b = a - 4 = 8
Answer: Alex alone does 12 bricks per minute, Bob alone 8 bricks per minute
Check: a=b+4, good
(3/4)(12 +8)=(3/4)(20)=15, good
