The ration between the two number is 4:5 and theri suk is 540. THE Greater of the two nukbers is
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Answer:
Theories of number development have traditionally argued that the acquisition and discrimination of symbolic numbers (i.e., number words and digits) are grounded in and are continuously supported by the Approximate Number System (ANS)-an evolutionarily ancient system for number. In the current study, we challenge this claim by investigating whether the ANS continues to support the symbolic number processing throughout development. To this end, we tested 87 first-(Age M = 6.54 years, SD = 0.58), third-(Age M = 8.55 years, SD = 0.60) and fifth-graders (Age M = 10.63 years, SD = 0.67) on four audiovisual comparison tasks (1) Number words-Digits, (2) Tones-Dots, (3) Number words-Dots, (4) Tones-Digits, while varying the Number Range (Small and Large), and the Numerical Ratio (Easy, Medium, and Hard). Results showed that larger and faster developmental growth in the performance was observed in the Number Words-Digits task, while the tasks containing at least one non-symbolic quantity showed smaller and slower developmental change. In addition, the Ratio effect (i.e., the signature of ANS being addressed) was present in the Tones-Dots, Tones-Digits, and Number Words-Dots tasks, but was absent in the Number Words-Digits task. These findings suggest that it is unlikely that the ANS continuously underlines the acquisition and the discrimination of the symbolic numbers. Rather, our results indicate that non-symbolic quantities and symbolic numbers follow qualitatively distinct developmental paths, and argue that the latter ones are processed in a semantic network which starts to emerge from an early age.
The interaction between task and ratio in the 5 th graders. Vertical bars denote 95% confidence intervals (CI).
The interaction between task and ratio in the 5
Answer:
Toatal number = 540
4x+5x = 540
9x= 540/9
X = 60
So the first number is = 4x = 240
the 2nd number is 5x = 60×5 = 300
So, The largest number is = 300 Ans