Question

the 10th no. last one

Answer 1

Well, you don't need to worry dude.

Simple interest is so simple

ok
value of 1 scholarship is 1,500

$value \: of \: 5 \: scholarships = 5 \times 1500 = 7500$
Now, according to what we are told
we get S.I= 7500
$si = \frac{p \times r \times t}{100}$
as time isn't specified we will assume that the prices are distributed annually
the principal is 1 lakh
time is 1 year
S.I is 7500




plugging in the values we get


$7500 = \frac{100000 \times r \times 1}{100 } \\ 1000r = 7500 \\ r = 7.5$

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. . The rate of interest is 7.5% p. a