Question

Mrs. Jackson has 7/8 kilograms of salt in the kitchen. If she uses 3/20 of the salt when preparing dinner, how much salt did she use?

a) 3/40 kg
b) 21/160 kg
c) 3/20 kg
d) 7/160 kg

Answer 1

Mrs. Jackson used 21/160 kilograms of salt when preparing dinner, calculated by multiplying the total amount of salt she had (7/8 kg) by the fraction she used (3/20).

Step-by-step explanation:

The question asks us to calculate how much salt Mrs. Jackson used when preparing dinner.

• First, we identify Mrs. Jackson's total amount of salt, which is 7/8 kilograms.
• Next, we determine the fraction of salt she uses, which is 3/20 of the total amount.
• To find the amount used, we multiply the total amount of salt by the fraction used: (7/8) * (3/20).
• We then calculate this multiplication: 21/160 kilograms.

Therefore, the amount of salt Mrs. Jackson used when preparing dinner is 21/160 kilograms, which corresponds to option b).