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nev322
25.07.2021 •
Mathematics
A man was traveling by air is allowed a maximum of 20kg luggages .The man has four bags weighing 3.5kg ,15 kg ,2kg and 1.5kg .Find excess weight of his luggage. 2 . Express the excess weight as a percentage of his maximum weight allowed.
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Ответ:
See explanation
Step-by-step explanation:
Maximum weight = 20 kg
Bag 1 = 3.5kg
Bag 2 = 15 kg
Bag 3 = 2kg
Bag 4 = 1.5kg
Total weight of bags = 22 kg
Excess weight of his luggage = Total weight of bags - Maximum weight
= 22 kg - 20 kg
= 2 kg
Express the excess weight as a percentage of his maximum weight allowed = excess weight / maximum weight × 100
= 2/20 × 100
= 0.1 × 100
= 10%
Express the excess weight as a percentage of his maximum weight allowed = 10%
Ответ:
40 students total
Step-by-step explanation:
Let s represent the total number of students. Then (3/4)s are girls and (1/4)s are boys. Using the info on boys, (1/4)s = 10. Thus, s = 40 (students).
Check: Is (1/4)(40) = 10? Yes.
Is (3/4)(40) = 30? Yes
Is 10+30 = 40 (students)? Yes