Question

find the simple interest and amount (a) principal=₹640 rate = 12 1/2 time 6 months answer​

Answer 1

Answer

640×1×12/4×100

=6.4×3

6.4 because cancelled out by the zeros of hundred and 3 as 12 cancelled by 4.

=19.2

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Answer 2

Answer:

S.I = ₹ 40

AMOUNT = ₹680

Step-by-step explanation:

S.I = P × R × T / 100

= 640 × 12.5 × 0.5 / 100

= ₹40

AMOUNT = S.I + PRINCIPAL

= 40 + 640

= ₹680