Risa bought some fruits. She spent $14 more than
45 of her money on some grapefruits. She then spent $7 more than 30% of the remaining money on some pears. Given that she had $14 left,
- How much did Risa have at first?
- How many kilograms of pears did she buy if they cost $4 per kg?
(a)
100% - 30% = 70%
70% of remaining money
= 14 + 7
= 21
1% of remaining money
= 21 ÷ 70
= 0.3
100% of remaining money
= 100 x 0.3
= 30
15 of total money
= 30 + 14
= $44
55 of total money
= 5 x 44
= $220
Amount that Risa had at first = $220
(b)
30% of the remaining money
= 30 x 30%
= 30 x
30100 = $9
Amount spent on pears
= 7 + 9
= $16
Weight of pears bought
= 16 ÷ 4
= 4 kg
Answer(s): (a) $220; (b) 7 kg