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lf'+' denotes 'multiplication', ′×′denotes 'subtraction',′÷′, denotes 'addition', and ′−′, denotes 'division', then 175 − 25 ÷ 5 + 20 × 3 + 10 =?- a)160
- b)70
- c)77
- d)240
Correct answer is option 'C'. Can you explain this answer?
lf'+' denotes 'multiplication', ′×′denotes 'subtraction',′÷′, denotes 'addition', and ′−′, denotes 'division', then 175 − 25 ÷ 5 + 20 × 3 + 10 =?
a)
160
b)
70
c)
77
d)
240
|
Subset Academy answered |
Given the new symbol notations:
- '+' denotes 'multiplication'
- '×' denotes 'subtraction'
- '÷' denotes 'addition'
- '−' denotes 'division'
We need to evaluate the expression 175 − 25 ÷ 5 + 20 × 3 + 10 using the new notation.
Step 1: Replace the symbols as per the new notation.
- '−' becomes division (i.e., '÷')
- '÷' becomes addition (i.e., '+')
- '+' becomes multiplication (i.e., '×')
- '×' becomes subtraction (i.e., '−')
So, the expression 175 − 25 ÷ 5 + 20 × 3 + 10 becomes: 175 ÷ 25 + 5 × 20 − 3 × 10
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, do the division and multiplication from left to right:
- 175 ÷ 25 = 7
- 5 × 20 = 100
- 3 × 10 = 30
So, the expression becomes: 7 + 100 − 30
- Now, perform the addition and subtraction from left to right:
- 7 + 100 = 107
- 107 − 30 = 77
Final answer: The value of the expression is 77.
So, the correct option is C: 77.
If '+' denotes '×', '×' denotes '+', '−' denotes '÷', and '÷' denotes '−', then 5+3×2−10÷5=?- a)5
- b)20
- c)15
- d)10
Correct answer is option 'D'. Can you explain this answer?
If '+' denotes '×', '×' denotes '+', '−' denotes '÷', and '÷' denotes '−', then 5+3×2−10÷5=?
a)
5
b)
20
c)
15
d)
10
|
Eduskill Classes answered |
5+3×2−10÷5
Using the given symbols,
5×3+2÷10−5
15+0.2−5=15.2−5=10.2≈10.
Using the given symbols,
5×3+2÷10−5
15+0.2−5=15.2−5=10.2≈10.
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