To find the total weight of the parcels Mani sent, we need to multiply the weight of each individual parcel by the number of parcels.
Mani sent 15 parcels, and each parcel weighs 10 2 1 kg.
First, let's convert the mixed number 10 2 1 kg into an improper fraction:
10 2 1 = 2 20 + 2 1 = 2 21 kg.
Now, calculate the total weight:
Multiply the weight of one parcel by the number of parcels:
15 × 2 21 = 2 15 × 21 = 2 315
Simplify 2 315 :
Divide the numerator by the denominator to convert back to a mixed number:
315 ÷ 2 = 157 remainder 1
So, 2 315 is equivalent to 157 2 1 kg.
Thus, the total weight of the 15 parcels is 157 2 1 kg .