Question

b. If the rate of interest is tripled keeping other things the same, then the simple interest

will be ___________.

i. doubled ii. tripled iii unchanged iv. one-third

c. An amount doubles itself at 20% per annum rate of simple interest in __________.

i. 10 years ii. 5 years iii. 20 years iv. 15 years

d. The simple interest on ₹ 3600 for 36 months at 5% per annum is ___________.

i. ₹504 ii. ₹405 iii. ₹540 iv. ₹450

e. If the principal is doubled keeping other things the same, then the simple interest

will be ___________.

i. half ii. doubled iii. unchanged iv. one-fourth


Priya got 25% extra rice when she bought 5 kg 25g. What is the total quantity of rice?


I WANT ALL ANSWERS TO ALL QUESTIONS

WITH STEPS (if I get all of the answers to the questions I will mark them as brainiest )

Answer 1

Answer:

1 tripled

2 5 years

please give a correct question

Answer 2

(b)Answer-- iv. one-third

Explanation

We know that,

$\frac{prt}{100} = simple \: interest$

then,

according to question,

$\frac{p \times 3r \times t}{100} = s \: i \\ \frac{p \times r \times t}{100} = \frac{s \: i}{3}$

now, we see the interest will be one-third.

(c)Answer-- ii. 5 years

Explanation

Let, Principal=x, Amount=2x

then, S.I.= 2x-x= x

now,

$time = \frac{x \times 100}{x \times 20} \\ time = 5 \: years$

(d)Answer-- iii. Rs 540

Explanation

$si = \: \frac{prt}{100} = \frac{3600 \times 3 \times 5}{100} = 540$

(e)Answer -- i. half

Explanation

We know that,

$s \: i = \frac{p \times r \times t}{100}$

then,

according to question,

$\frac{2p \times r \times t}{100} = s \: i \\ \frac{p \times r \times t}{100} = \frac{s \: i}{2}$

now, we see the simple interest will be half.

Thanks