4 years ago

you earned a 90% on a science test yoy answer 18 questions correctly how many questions were on the test

Mathematics

1 answer:

Talja [164]4 years ago

6 0

X= entire test
if
18=.9x
then divide both sides by .9
18/ .9
and x = 20
20 questions total on the test

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Answer:

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Step-by-step explanation:

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3 years ago

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pshichka [43]

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3 years ago

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(b) How much the selling price should be fixed for pulse bought for Rs.70 per kg. to earn a profit of Rs.6 after allowing a 5 %

Mama L [17]

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Rs. 80

Step-by-step explanation:

Given that :

Purchase price = 70

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Discount = 5%

Let selling price = x

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x * (1 - 5%) = (70 + 6)

x * (1 - 0.05) = 76

x * 0.95 = 76

0.95x = 76

x = 76 / 0.95

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Hence, selling price = Rs. 80

3 0

3 years ago