Find the product of 7 and the sum of 8 and 10
The sum of 1 and 7 is 8. That is, 1 + 7 = 8
The two numbers with a sum of 33 and a product of 200 are 25 and 8. 25 x 8 = 200, 25 + 8 = 33.
8 + 7 = 15
76
25 + 8 = 33
Find the product of 7 and the sum of 8 and 10
The sum of 1 and 7 is 8. That is, 1 + 7 = 8
The two numbers with a sum of 33 and a product of 200 are 25 and 8. 25 x 8 = 200, 25 + 8 = 33.
8 + 7 = 15
Factors of 25: 1, 5, 25 Their sum = 31 Difference between 31 and 8 = 23.
15
The sum is: 8
percent means out of 100 → 25% of 7/8 = 25/100 × 7/8 = (25×7)/(100×8) = 175/800 = (7×25)/(32×25) = 7/38 It would have been prudent to simplify the 25% before the multiplication: 25% of 7/8 = 25/100 × 7/8 = (1×25)/(4×25) × 7/8 = 1/4 × 7/8 = (1×7)/(4×8) = 7/32 But then again, it is expected that students should recognise 25% as ¼
8
76
(7 x 8) + (8 x 8) = 15 x 8 = 120