problem: ratios word problems 6
Three small cities A, B, C share the costs for a new hospital in the ratio 10 : 5 : 7
How much have each city to spend if the total amount is $ 7 920 000?
answer: ratios word problems 6
1. step: given
parts $
city A: 10 ?
city B: 5 ?
city C: 7 ?
total amount: 22 7 920 000
wanted: city A, city B, city C
2. step: 1 part
1 part = $ total amount : parts total amount
1 part = 7 920 000 : 22
1 part = $ 360 000
3. step: costs for city A, B, C
parts $
city A: 10 10 * 360 000 = 3 600 000
city B: 5 5 * 360 000 = 1 800 000
city C: 7 7 * 360 000 = 2 520 000
total amount: 22 7 920 000
4. step: answer
City A have to pay $ 3 600 000, city B $ 1 800 000 and city C $ 2 520 000.