A construction company has enough money to pay 10 workers for 15 days. If the company adds 5 more workers to do the work, for how many days can it pay them at the same rate ?
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Answer:
10 : 15 = 5 : 7.5
Step-by-step explanation:
Solution:
Since
10 : 15 = 5 : X
Then we know
15/10 = X/5
Multiplying both sides by 5 cancels on the right
5 × (15/10) = (X/5) × 5
5 × (15/10) = X
Then solving for X
X = 5 × (15/10)
X = 7.5
Therefore
10 : 15 = 5 : 7.5
Hope it helps ^_^