Question

Three friends bought a rice variety priced at 39/4 per kg. If they bought 21/4 kg, 49/8 and 52/5 kg of rice respectively. Find the total amount paid to the shopkeeper together by the three friends

Answer 1

Answer:

871/40

Step-by-step explanation:

$\frac{21}{4} + \frac{49}{8} + \frac{52}{5} = \frac{21 \times 10 + 49 \times 5 + 52 \times 8}{40} = \frac{210 + 245 + 416}{40} = \frac{871}{40}$

1. add 21/4, 49/8 and 52/5.
2. to add take the LCM of 4,8 and 5.