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3 years ago

Yoko paid $10.70 for stamps. She bought three times as many

Mathematics

2 answers:

snow_lady [41]3 years ago

6 0

Answer:

30 of 25 cent, 10 of 14 cent, 60 of 2 cent

Step-by-step explanation:

Note: it must be typo 10.70, changed to 10.10

Number of 25 cent stamps = x

Number of 14 cent stamps = y

Number of 2 sent stamps = z

Total = $10.10 = 1010 ¢
x = 3y
z = 2x ⇒ z = 6y

Solving equation

25x + 14y + 2z = 1010
25(3y) + 14y + 12y = 1010
75y + 26y = 1010
101y = 1010
y = 1010/101
y = 10

The finding x and z

x = 3*10 = 30
z = 6*10 = 60

koban [17]3 years ago

3 0

punta ka Google then search mo 'yang tanong mo

di'ba Sabi ni'la Alam ni google lahat ka'ya Alam ni google 'yan

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