Question

Activity 3
The price of 3 note books and 5 pens together is 75 rupees. The price of 3 note books
and 10 pens together is 90 rupees. What is the price of a note book? What is the price of a pen?
Please answer fast as possible.
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Answer 1

Answer:

the price of three notebooks would be rupees 16.66666666666667 and the price of one pen is 5 rupees.

Step-by-step explanation:

Answer 2

Answer:

the price of the pen is 3 rupees

Step-by-step explanation:

as in the first statement its given tht 3 note books n 5 pens r of 75 rupees

while 10 pens n 3 notebooks r of 90 rupees

so the no. of note books is same in both statements.

when there were 5 pens then-- 75 rupees

when there were 10 pens then--90 rupees

so, difference between them is of 5 pens

5 pens= 15 rupees (90-75)

thus each pen costs 3 rupees (15÷5)

now we know the price of pen let's verify it

in the first statement there were 5 pens so 15 rupees rest is of note books i.e. 3 notebooks cost 60 rupees (each 20)

in 2nd statement

3 notebooks so 60 rupees and 10 pens so 10×3=30

60+30

=90

hence proved

if it helps mark it as brainliest