Dhruv collected 112 sea-shells. He wants to make necklaces of 28 shells each for his three friends. Will these shells be enough to make necklaces for all his friends? How many necklaces can Dhruv make from 112 shells?
Given: Total shells = 112 Shells per necklace = 28
Calculation: Number of necklaces = 112 ÷ 28 = 4
Shells needed for 3 friends: = 84 shells
Comparison: 112 > 84 ∴ Shells are enough for 3 friends.
Remaining shells: 112 - 84 = 28 shells
Answer: Yes, the shells are enough. Dhruv can make 4 necklaces from 112 shells.
Explanation
The chapter shows repeated subtraction: 112 - 28 = 84 (1 necklace), 84 - 28 = 56 (2 necklaces), 56 - 28 = 28 (3 necklaces), 28 - 28 = 0 (4 necklaces). So 112 ÷ 28 = 4 necklaces can be made.
Solution Steps
Step 1: Total shells = 112
Step 2: Shells per necklace = 28
Step 3: Number of necklaces = 112 ÷ 28 = 4
Step 4: For 3 friends: = 84 shells needed
Step 5: 112 > 84, so enough shells. Remaining = 112 - 84 = 28 shells