Choose 2 numbers whose sum is 1.9

Question

-0.2
-0.4
-0.5
2 1/10
-0.3
23/10
2 2/5
11/5

Answer 1

To find two numbers from the given options whose sum is 1.9, we can convert everything to a decimally or fractionally compatible format. The decimal equivalent of 1.9 is 1.9, and we can transform the fractions:

• 2 1/10 = 2 + 1/10 = 2.1
• 23/10 = 2.3
• 2 2/5 = 2 + 2/5 = 2.4
• 11/5 = 2.2

Now, listing all the options in decimal form:

• -0.2
• -0.4
• -0.5
• 2.1 (2 1/10)
• -0.3
• 2.3 (23/10)
• 2.4 (2 2/5)
• 2.2 (11/5)

Next, we can check the pairs:

1. -0.5 + 2.4 = 1.9
2. -0.4 + 2.3 = 1.9
3. -0.3 + 2.2 = 1.9
4. -0.2 + 2.1 = 1.9

From the calculations, the pairs that give a sum of 1.9 are:

1. -0.5 and 2 2/5 (2.4)
2. -0.4 and 2 1/10 (2.1)
3. -0.3 and 11/5 (2.2)
4. -0.2 and 23/10 (2.3)

Any of these pairs yield a sum of 1.9.