problem: ratios word problems 5
Laura, Susan and Mary plucked nuts in the ration 7 : 3 : 5
Laura plucked 21 nuts.
How many nuts were plucked together?
answer: ratios word problems 5
1. step: given
parts nuts
Laura: 7 21
Susan: 3 ?
Mary: 5 ?
total amount: 15 ?
wanted: total amount nuts
2. step: 1 part
1 part = nuts Laura : parts Laura
1 part = 21 : 7
1 part = 3
3. step: Susan, Mary and total amount
parts nuts
Laura: 7 21
Susan: 3 3 * 3 = 9
Mary: 5 5 * 3 = 15
total amount: 15 45
4. step: answer
They plucked 45 nuts altogether.