The sum of 15% and 10% of a positive number is 70, then double of that number is |
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a) |
440 |
b) |
280 |
c) |
560 |
d) |
140 |
The sum of 15% and 10% of a positive number is 70, then double of that number is |
|||||||
a) |
440 |
b) |
280 |
c) |
560 |
d) |
140 |
Let the positive number be
Then, according to problem, we have of of
∴ Double of the number =2×280=560